Average boa size?

My 10 Months old male Boa Constrictor imperator is 1,10 meter long(3,60 feet - 43,30 inches). weighs 820 gramms(1,80 lbs). Is this the average size for his age?

Boa sizes vary depending on many factors, mostly locality, genetics and the amount of feeding. A healthy boa is more about having a good body structure and head size (over fed boas can get either pin heads or the jaws get large/puffy looking from eating oversized items).
In my opinion over 3' for a snake under a year old seems like it's getting pushed a bit too fast but again, they do vary even in one litter some will grow faster/slower than others.

That seems big. My 12-16 month old BCI's were about 500-700 grams last summer/fall. I remember because my daughter was tracking the weights of many of your juvenile snakes over several months as part of a science fair project, to determine what percentage of feeder ultimately became snake.

There was a similar thread earlier. OP I suggest looking at past threads for many answers you may seek.

Many things have been covered by very knowledgeable people in the past, and obviously there are qualified folks here now as well.

I wrote this response a few days ago, and though its not directly related to your question, it echoes what Absolutely April said here.


Everything is really a snake to snake situation. There are plenty of HUGE BCI boas.

In the wild the largest boas are the oldest boas. It has been found, GENERALLY that BCC boas tend to be larger as adults than the other boas.

Many BCI "common" boas are not common at all. There is mixing in captivity and also natural intergrades that have both BCI and BCC traits.

I would consider a big boa to be 8 feet and over.

Boas are supposed to grow slow. In nature they eat infrequently and have evolved over millions of years to be able to sustain themselves on very little food.

Boas in captivity that are fed large quantities of high fat, captive raised prey will almost always grow quickly and die early.

The focus of any passionate boa keeper should be on health and longevity VS size.

A healthy, long lived boa will grow to a respectful size as it ages.

There should never be a rush to create a large snake of any type.

If you want to own something that will ultimately end up on the bigger end in the boa world, a BCC with Peruvian or Amazon basin roots will generally get there.

Pokigron, Suriname boas tend to be a smaller locality than the Basin Guyana and Suriname BCC.

A nice 6-7 foot boa is a lot of snake. Impressive, handleable and not overly imposing.

There are specimens that can hit 10-11 feet and weigh 80 plus pounds.


What you should take away from the above is this.

Feed a boa like it eats in the wild. Seasonality, which includes light changes, temp changes, feeding frequency and other subtle habitat change is the key to long term success.

Vincent Russo wrote THE COMPLETE BOA CONSTRICTOR, it is a book I highly recommend.

Your boa will grow, but let it grow at its own pace.

Even if your snake may be a little larger than average now, you can still keep your snake healthy by making adjustments in feeding.

Good luck.

Dang, 3.5' for a 10 month old is huge lol. My sunglow was 3.5' at like 1.5-2 years old. My 1 year old guy is about 30" and eating adult mice every week. But every snake is going to be a bit different but there will still be averages. My 3 year old sunglow girl is about 5' and my 4+ year old normal girl is 6-7' probably pushing towards the 7'.

I don't have weights for them except my big girl who at last vet visit weighed in a 12.7 lbs.

Basically it boils down to feed boas conservatively. I feed once week while they are on mice. Then once they graduate to weaned/small rats, they eat every 2 weeks. Then once they are up to medium to large rats, it's every 3-4 weeks. This is for my females. My male gets the same schedule but at medium to large rats, he will eat every 4 weeks.

And remember, anything 'jumbo' is probably not good as that usually means retired breeders which are usually high in fat content. Also boas should not eat guinea pigs. They are high in fat too. I feed mine rats, rabbits and quails.

That sounds big to me too. Just did a weight on a few of mine out of curiosity and my 10 month old is 162g and if he's 20in I'd be surprised. He also just ate a hopper so he's probably a little lighter than the 162g. Granted I feed less but still a major difference in size! My guy eats a hopper every two weeks.

My hypo and sunglow that are around a year and 8 months are around 3ft or less and 3.5ft. My hypo male being the larger one since he won't stop growing no matter how little he is fed. The hypo male is 626g after just eating and the sunglow female is 484g after just eating. The male hypo just got moved to weaned-small rats every 3 weeks and the sunglow just had her first rat but she will be getting an adult mouse the next few meals again. I can't tell either one ate a rat but I still think the rat is a little much for my sunglow right now.

I have decided to post an update about the growth level of my 14 months old male BCI. I just measured him, he is now 130 cm long (4,26 feet, 51 inch). and he weighs 1358 gramms (2,99 lbs). He is growing 5 cm(1,96 inch) every month on average. If this growth level continues, he will reach 2,40 meter (8 feet) when he is 3 years old. To my knowledge, snakes grow rapidly until they reach 3 years old. The growth level would slow a bit between the third and fourth year. And it will be very slow after the fourth year.

My yearling male BI is about 15 months and no where near that size

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Originally Posted by ShaneSilva

My yearling male BI is about 15 months and no where near that size

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Maybe this is hard to believe.. The parents of my BCI were 13 years old when he was born. The father was at that age 1,60 meter (63 inches, 5,20 feet) and the mother was 1,70 meter (67 inches, 5,60 feet) long. So snakes are different. And snake keepers are also different. I saw a BCI for sale who was 7 years old and only 1,05 meter (41 inches, 3,40 feet) long.

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Originally Posted by Dutti

I have decided to post an update about the growth level of my 14 months old male BCI. I just measured him, he is now 130 cm long (4,26 feet, 51 inch). and he weighs 1358 gramms (2,99 lbs). He is growing 5 cm(1,96 inch) every month on average. If this growth level continues, he will reach 2,40 meter (8 feet) when he is 3 years old. To my knowledge, snakes grow rapidly until they reach 3 years old. The growth level would slow a bit between the third and fourth year. And it will be very slow after the fourth year.

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Maybe you have a Burm :)

Seriously though that's pretty fast growth I'd say .

My adult Snow Boa is about 6years old and around 7' ...


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If that snake is a boa and reaches 8' in its first 3 years, you should contact Ripley's assuming you arent power feeding it and assuming it lives to that age. Generally, power fed boas usually dont break the 5 year mark. My largest female is about 5 years old and 6.5'. I still think there is something wrong with those numbers though as none of my boas have ever grown than fast. Those numbers are like how fast my retic has grown but he is a python and eats every week.

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Originally Posted by Dutti

I have decided to post an update about the growth level of my 14 months old male BCI. I just measured him, he is now 130 cm long (4,26 feet, 51 inch). and he weighs 1358 gramms (2,99 lbs). He is growing 5 cm(1,96 inch) every month on average. If this growth level continues, he will reach 2,40 meter (8 feet) when he is 3 years old. To my knowledge, snakes grow rapidly until they reach 3 years old. The growth level would slow a bit between the third and fourth year. And it will be very slow after the fourth year.

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You may want to slow down... just because they can reach that size at that age doesn't mean they *should*. A fast grown boa may have a shortened life span.

Boas do continue to grow their entire lives. You are correct it does typically slow down a lot after 4-5yrs. I got a 9yr old at 5.5' boa and when she died at 28 yrs of age she was 8.5'.

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Originally Posted by Dutti

Maybe this is hard to believe.. The parents of my BCI were 13 years old when he was born.

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I am curious, why is that hard to believe? One of my girls didn't have her first litter until she was 16.

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Originally Posted by Sauzo

If that snake is a boa and reaches 8' in its first 3 years, you should contact Ripley's assuming you arent power feeding it and assuming it lives to that age. Generally, power fed boas usually dont break the 5 year mark. My largest female is about 5 years old and 6.5'. I still think there is something wrong with those numbers though as none of my boas have ever grown than fast. Those numbers are like how fast my retic has grown but he is a python and eats every week.

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Im not power feeding my snake. I want him to reach over 40 of age. i,m not feeding him every week. You should not set a standard out of your boas. I have no reason to lie in such a forum. im not using my real name, not looking for fame or something. Why would i lie?

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Originally Posted by Sauzo

If that snake is a boa and reaches 8' in its first 3 years, you should contact Ripley's .

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It is very possible for them to reach that size that quickly, but yes they *generally* die before reaching 10 years.

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Originally Posted by AbsoluteApril

You may want to slow down... just because they can reach that size at that age doesn't mean they *should*. A fast grown boa may have a shortened life span. B

oas do continue to grow their entire lives. You are correct it does typically slow down a lot after 4-5yrs. I got a 9yr old at 5.5' boa and when she died at 28 yrs of age she was 8.5'.



I am curious, why is that hard to believe? One of my girls didn't have her first litter until she was 16.

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i meant the small size of the parents of my snake compared with the large size of my snake is hard to believe

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Originally Posted by Dutti

Im not power feeding my snake. I want him to reach over 40 of age. i,m not feeding him every week. You should not set a standard out of your boas. I have no reason to lie in such a forum. im not using my real name, not looking for fame or something. Why would i lie?

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I'm using my snakes as the standard because they are the standard of most average boas. Your boa if the growth is right is far from standard and is actually more in line with a boa that is being power fed which is why i made the comment. Sure boas go through growth spurts but almost 2" a month is beyond fast. With that kind of growth, he would be shedding every 1-2 months. I could see shedding like that from a baby but a 4.25' boa is far from a baby. Most at that length are 2-3 years old.

I never said you 'lied'. I said you could have gotten your measurements wrong or have been given wrong info about the age. No need to get defensive.

And as for the parents being 13 years old at giving birth, you shouldnt even consider breeding a boa until it is around 6 years old imo. 10 year old breeders are nothing special. My Pokigron girls parents were 10 years old when she was born.

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Originally Posted by AbsoluteApril

It is very possible for them to reach that size that quickly, but yes they *generally* die before reaching 10 years.

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Oh i know. I've seen people do it and then breed them as they are mostly just concerned with pumping out litters vs having a long lived 'pet'.

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Originally Posted by Sauzo

I'm using my snakes as the standard because they are the standard of most average boas. Your boa if the growth is right is far from standard and is actually more in line with a boa that is being power fed which is why i made the comment. Sure boas go through growth spurts but almost 2" a month is beyond fast. With that kind of growth, he would be shedding every 1-2 months. I could see shedding like that from a baby but a 4.25' boa is far from a baby. Most at that length are 2-3 years old.

I never said you 'lied'. I said you could have gotten your measurements wrong or have been given wrong info about the age. No need to get defensive.

And as for the parents being 13 years old at giving birth, you shouldnt even consider breeding a boa until it is around 6 years old imo. 10 year old breeders are nothing special. My Pokigron girls parents were 10 years old when she was born.

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Between 19 December 2016 and 27 June 2017, he shed 6 times. I told you before, i have his identification papers with me. I know the breeder personally. i was there when he was born. i have him since he was a month old. You know what? since the begining i feed him live. again, im not power feeding him. twice a month on average. He is too powerful now that medium rats are not enough for him. the last rat that he ate i would categorize it as large, not extra large though.

Ok bud .... don't get too stressed . I don't think anyone is doubting your word or anything .

Sounds like you're gonna end up with a flamin' huge Boa !


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Lol ok, calm down and breath. You sure you have a boa and not a retic lol? The growth and feeding sound exactly like what i did for my retic who at 14 months old is on jumbo rats. And if it is a boa, then grats, you got a 1%er boa that will at that rate, grow into probably a record size boa that will rival anacondas, retics and burms.

And thats incredible that a 14 month old is too large for medium rats. At 14 months, pretty much all my boas were graduating to weaned/small rats. My 3.5 year old 5.5' sunglow female is on medium rats every 3-4 weeks.

I would like to see a pic of this titanoboa lol.

[IMG]https://ball-pythons.net/forums/cach...%2F263zvo8.jpg[/IMG]

I expected bigger!! Assuming the center brace is 2", that boa looks more like 3-3.5' to me. I smell "Bigger until near a rule syndrome" :P It's kind of like how manhood shrinks when put in cold water ;)

He looks about the size of my TH snowglow boy who is 3' and about 14 months old too except he's on adult mice still.

Also not sure i asked this yet or not but this is more for the health of your boa, boa food should leave no lump to a very slight lump in their stomach. Obviously if your boa is overweight then you cant use this guideline as it's body scaling will be out of proportion to begin with. And I'm not saying your boa is overweight lol.

Here he is to show a comparison although pics make it kind of hard.
https://ball-pythons.net/forums/cach...018f9623_h.jpg

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Originally Posted by Sauzo

I expected bigger!! Assuming the center brace is 2", that boa looks more like 3-3.5' to me. I smell "Bigger until near a rule syndrome" :P It's kind of like how manhood shrinks when put in cold water ;)

He looks about the size of my TH snowglow boy who is 3' and about 14 months old too except he's on adult mice still.

Also not sure i asked this yet or not but this is more for the health of your boa, boa food should leave no lump to a very slight lump in their stomach. Obviously if your boa is overweight then you cant use this guideline as it's body scaling will be out of proportion to begin with. And I'm not saying your boa is overweight lol.

Here he is to show a comparison although pics make it kind of hard.
https://ball-pythons.net/forums/cach...018f9623_h.jpg

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what shall i reply to this? All the numbers that i gave you are correct. The only difference is that the photo of your boa is too close, my photo is not that close. You can,t compare the 2 photos. If i wanted to take a photo that close of my snake i would only be able to show a part of it because of its size. I told you that im not overfeeding it

Here is a close photo showing a part of him

[IMG]https://ball-pythons.net/forums/cach...m%2Frm2mfc.jpg[/IMG]

Well technically you can still be overfeeding a boa by giving it too large of prey even if you do space it out every 2-3 weeks or so. An example would be something like me feeding my 6.5' boa a 2lb rabbit every 3-4 weeks. Sure the time frame is ok but the amount of food being offered is way too much. Thats why i asked if the prey you are offering aka medium rats is leaving none to a very slight lump. Boa food should really leave no telltale signs after they eat. They arent like a python who in my retics case, isnt happy unless he is stuffed like a Christmas turkey every 10 days but thats a python, completely different ball game than boas.

I was just showing the pic for comparison in that the top of the chair backing is about 8" across so you can gauge the length of the boa. But pics are hard to really judge a length anyways unless you take it perfectly from above.

But anyways, good luck. You will know in about 5-10 years if you are overfeeding though as 10 years seems to be the average length of time an overfed boa lives. The breeder of my sunglow and I were talking and his first boa he ever had died at 10 years of age from a heart attack from overfeeding. Thats why he feeds his boas on the smaller side now as well as a few other breeders i talked to.

If your boa was mine, at 4.25', i would have her on small rats every 2 weeks. It's hard to starve a boa to death but so easy to overfeed them. Anyways, like i said, good luck :)

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Originally Posted by Sauzo

Well technically you can still be overfeeding a boa by giving it too large of prey even if you do space it out every 2-3 weeks or so. An example would be something like me feeding my 6.5' boa a 2lb rabbit every 3-4 weeks. Sure the time frame is ok but the amount of food being offered is way too much. Thats why i asked if the prey you are offering aka medium rats is leaving none to a very slight lump. Boa food should really leave no telltale signs after they eat. They arent like a python who in my retics case, isnt happy unless he is stuffed like a Christmas turkey every 10 days but thats a python, completely different ball game than boas.

I was just showing the pic for comparison in that the top of the chair backing is about 8" across so you can gauge the length of the boa. But pics are hard to really judge a length anyways unless you take it perfectly from above.

But anyways, good luck. You will know in about 5-10 years if you are overfeeding though as 10 years seems to be the average length of time an overfed boa lives. The breeder of my sunglow and I were talking and his first boa he ever had died at 10 years of age from a heart attack from overfeeding. Thats why he feeds his boas on the smaller side now as well as a few other breeders i talked to.

If your boa was mine, at 4.25', i would have her on small rats every 2 weeks. It's hard to starve a boa to death but so easy to overfeed them. Anyways, like i said, good luck :)

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My Boa does a lot of movement and exercise outside the cage, not just eating and sleeping. And im not forcing it to eat a big size meal. If i wanted to feed him now small rats, i will need 3 or 4 of them at each feeding, otherwise he will remain hungry. And i can reduce the amount of food later in life. And thank you for wishing me good luck. I wish you also good luck

You're feeding a young 4' boa that weighs 3# large rats, feeding every couple weeks and still can't understand or believe it's overfed? My 6 foot, 5 year old boa who weighs probably triple that usually eats a medium sized prey item every 3-4 weeks fwiw.

https://uploads.tapatalk-cdn.com/201...162f4b6172.jpg

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Originally Posted by GoingPostal

You're feeding a young 4' boa that weighs 3# large rats, feeding every couple weeks and still can't understand or believe it's overfed? My 6 foot, 5 year old boa who weighs probably triple that usually eats a medium sized prey item every 3-4 weeks fwiw.

https://uploads.tapatalk-cdn.com/201...162f4b6172.jpg

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That's a beauty right there! Absolutely stunning, and what a pretty tail.



Below is my similar sized BC a Barranquilla, Colombian locale.

http://i772.photobucket.com/albums/y...tput_4916.jpeg

Same age. 5 year old male. 6.5' long.

The BCC above my picture is slightly shorter in length which is common. The BCC will tend to grow slower but end up larger in the end.

O/P did you ever read the book I recommended earlier in the thread?

I posted a bit of info here on the front end of the thread.

Feeding and husbandry play the biggest role in growth.

Eternally warm temps, with no seasonality will keep your animal's metabolism higher. It is NOT normal for a boa constrictor to eat year round, which is why in captivity you have to observe and practice some lighting, humidity and temperature variations during certain times of the year depending upon where you live.

2 large rats every 14 days is too much food IMO.

Read that book and look for Gus Rentfro's Facebook page.

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Originally Posted by Gio

That's a beauty right there! Absolutely stunning, and what a pretty tail.



Below is my similar sized BC a Barranquilla, Colombian locale.

https://ball-pythons.net/forums/cach...tput_4916.jpeg

Same age. 5 year old male. 6.5' long.

The BCC above my picture is slightly shorter in length which is common. The BCC will tend to grow slower but end up larger in the end.

O/P did you ever read the book I recommended earlier in the thread?

I posted a bit of info here on the front end of the thread.

Feeding and husbandry play the biggest role in growth.

Eternally warm temps, with no seasonality will keep your animal's metabolism higher. It is NOT normal for a boa constrictor to eat year round, which is why in captivity you have to observe and practice some lighting, humidity and temperature variations during certain times of the year depending upon where you live.

2 large rats every 14 days is too much food IMO.

.

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2 large rats every 14 days! if you mean me with this, im not feeding that much. i said 2 rats every 30 days or one rat every 2 weeks on average. The size of the rats were until very recent medium until they became not enough for him so he ate a large rat last time, not extra large

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Originally Posted by Dutti

2 large rats every 14 days! if you mean me with this, im not feeding that much. i said 2 rats every 30 days or one rat every 2 weeks on average. The size of the rats were until very recent medium until they became not enough for him so he ate a large rat last time, not extra large

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OK,

I misunderstood,

Even still 1 large rat every 21 days is plenty. At some point you should skip a month or two altogether, then feed a smaller item, then feed a quail equivalent if you have the option, then go back to larges every 21 days if you want. Break up the pattern, prey choice and size now and then.

The first post of the thread was you asking about "average size" and most folks here are gently hinting you MAY be feeding too much, and most have also indicated that the size of your boa is possibly above "average".

Do what you want to do, as that is your choice, but again, I stress reading THE COMPLETE BOA CONSTRICTOR

I think slowing things up a bit will do your snake well. If you think he's starving, I can honestly tell you that is very unlikely. He may be conditioned to expect food, and expect it often, but feeding 1 large rat every 3-4 weeks is plenty. Every 2 weeks is too much IMO. Drop your temps, or at least run a night drop and he'll require less food as well.

I skip feeding from November to late March or early April. My boa grew over the winter when he wasn't eating.

I think the snake looks good right now BTW, and he could just be an oddball big boy. However internally, overfeeding can manifest before it shows up externally.

Just be mindful of that.

Well, figure I'll jump in again lol. The problem isnt the size of your boa. The problem is the amount of food you are feeding said boa for his size. A 4' boa should in no way be eating a large rat. Most 4' boas are on small rats. Now this is assuming your larges are the same as most everyone elses larges which can vary from source to source. But for me, larges are around 220-250g. That is what my 6.5' boa eats every 3-4 weeks.

And like i said before, just because the time frame you feed is acceptable, the size of the prey might not be. That combo will still equal to overfeeding. You need to balance out the size of the prey AND the time frame you feed.

Also, boas are ALWAYS hungry. They are opportunistic feeders. They will pretty much never turn down a meal as they dont know when the next one may come. In the wild they sometimes go months without food. This trait in them makes them both a pleasure to deal with and a pain at the same time. My boas always act hungry. The minute the doors are slid open, they perk up and think dinner is coming. When they realize it's my hand and not a juicy rat, quail or rabbit, they sulk and continue on. You cant judge your feeding based on the snake as you will end up going broke from buying food and have a scaled stuffed sausage with a head that dies in 5-10 years.

And like Gio said, overfeeding can manifest before it shows up externally. Meaning that boas build up fat around their organs first, then it shows up on the body. So by the time you see your squarish boa turn into a stuffed sausage, they damage has already been done internally on the liver and heart.

But anyways, like i was more or less trying to say, a large rat for a 4' boa is WAY too much. Even a medium rat for a 4' boa is too much. My 5.5' sunglow like i mentioned eats medium rats every 3-4 weeks. People are just trying to shed light for you but some people just have learn by hands on. If you continue feeding the way you are, you are going to have a very thick boa with a tiny pinhead that will require rabbits or 3 large rats to fill up by your standards.

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Originally Posted by Sauzo

Well, figure I'll jump in again lol. The problem isnt the size of your boa. The problem is the amount of food you are feeding said boa for his size. A 4' boa should in no way be eating a large rat. Most 4' boas are on small rats. Now this is assuming your larges are the same as most everyone elses larges which can vary from source to source. But for me, larges are around 220-250g. That is what my 6.5' boa eats every 3-4 weeks.

And like i said before, just because the time frame you feed is acceptable, the size of the prey might not be. That combo will still equal to overfeeding. You need to balance out the size of the prey AND the time frame you feed.

Also, boas are ALWAYS hungry. They are opportunistic feeders. They will pretty much never turn down a meal as they dont know when the next one may come. In the wild they sometimes go months without food. This trait in them makes them both a pleasure to deal with and a pain at the same time. My boas always act hungry. The minute the doors are slid open, they perk up and think dinner is coming. When they realize it's my hand and not a juicy rat, quail or rabbit, they sulk and continue on. You cant judge your feeding based on the snake as you will end up going broke from buying food and have a scaled stuffed sausage with a head that dies in 5-10 years.

And like Gio said, overfeeding can manifest before it shows up externally. Meaning that boas build up fat around their organs first, then it shows up on the body. So by the time you see your squarish boa turn into a stuffed sausage, they damage has already been done internally on the liver and heart.

But anyways, like i was more or less trying to say, a large rat for a 4' boa is WAY too much. Even a medium rat for a 4' boa is too much. My 5.5' sunglow like i mentioned eats medium rats every 3-4 weeks. People are just trying to shed light for you but some people just have learn by hands on. If you continue feeding the way you are, you are going to have a very thick boa with a tiny pinhead that will require rabbits or 3 large rats to fill up by your standards.

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Thank you for all of this useful information. I have found it to be a great help. I just acquired my red tail male a few weeks ago and I have been wondering what kind of feeding schedule to put him on. Your schedule makes sense to me seeing as I do not want an overweight and lazy boa. You seem to have great knowledge of these snakes and I really appreciate your advice not knowing all that much about these snakes myself. I have strictly dealt with ball pythons for 8 years but I wanted a boa for a long time and I wanted to wait until I felt I was ready for a bigger snake.

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Originally Posted by Zincubus

Maybe you have a Burm :)

Seriously though that's pretty fast growth I'd say .

My adult Snow Boa is about 6years old and around 7' ...


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Mine is about 5 years and is about 6'6" and weighs about 11lbs, weighing him is kind of an ordeal.

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I want to post a new update about the growth level of my now a year and a half old male BCI. I just measured him, he is now 153 cm long (5 feet, 60 inch). and he weighs 2036 gramms (4,48 lbs). The last time i measured him was before 7 months and he was 130 cm long(4,26 feet, 51 inch). and he weighed 1358 gramms (2,99 lbs). so he grew 3,28 cm (1,29 inch) a month.

I have to correct myself. Last time i measured him was before 4 months(I just reviewed this thread). And he was 130 cm long(4,26 feet, 51 inch). and he weighed 1358 gramms (2,99 lbs). So he grew 5,75 cm (2,26 inch) a month. If this growth level continues, he will reach 2,53 meter (8,3 feet) when he is 3 years old.