Almost any male boa, be it BCI or BCC has the potential to reach the same size as a female.
In captivity even more so if the snake isn’t exposed to the phermonal breeding cues given off by a female and simply raised as a pet.
My male, Barranquilla, Colombian is a 6.5 to 7 foot animal. I don’t feed him from late October until late March. (6 years old) He grows more when he is off feed as an adult. That span of fasting seems to be recognized by the experts as a period in which growth takes place. Vincent Russo, Gus Rentfro and Eugene Bassett speak of seasonal changes and a natural chain of events that lead to less feeding. Russo discusses in his book his observations when his animals are not eating. Energy usually used for digestion goes toward growth.
I have experienced the same.
I did not use the seasonal method until my boy was 2 years old.
A boa without locality data can be a mix of BCC and BCI. It may look BCI but end up larger because of some cross way back in its lineage. Don’t assume “common boa” is a guarantee of anything. It may stay small or have some substantial size genetics in it.
If you are looking for something in particular go with a breeder that specializes in what it is you seek.
There are dwarf animals. Research the island populations and read about their adaptations to the migratory habits of certain birds and other animals. They are smaller due to their environment, prey size and prey availability during the year.
Colombian boas can get very large but any huge boa is the exception not the rule. People can be 7 feet tall however most people are not.
I’m using a phone here and can’t go into much more detail.
This is a good site.
https://boa-constrictors.com/en/_home
A boa is an excellent choice, and if raised properly, you’ll have a long lived pet. Most end up very docile which is why they are often recommended as the perfect big snake.
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