Can Siamese start as hooded?

[aldebono]

What a cutie pie!!!

[satomi325]

What a cutie pie!!!

Thank you!

[snakesRkewl]

Siamese hooded or marked Siamese, whichever you prefer...
I've made hundreds of marked Siamese, they almost always look like a regular Siamese as an adult.







Blazed Siamese

[aldebono]

What cuties! I can't wait to get them tomorrow and breed them into my dumbos, rexs, blues... The possibilities are endless!

Also... Are Siamese prone to megacolon? What about the blaze Siamese you have up there, would that still be considered a high white?

I am just wondering because I believe I had a megacolon baby and may have pinpointed the mom as odd eyed and white spot on her head.

[snakesRkewl]

Siamese are not any more prone to carrying the high white gene than any other color of rat.

Mega colon is caused by the dominate form of the high white gene, all of my rats are recessive high white so I have no issues with mega colon at all.

Odd eyes are a result of high white, as are blazes, head spots, and any rat that has white where it's not suppose to be.
If you got mega colon babies from an odd eye rat then you've got dominate trait high white, something that I would feed off...

[aldebono]

Ok so now that I have someone that understands what high white really is, I need to understand what exactly is a high white.

It is any misplaced white marking other than an unbroken solid hooded and a self correct (higher than berkshire)? I know that there are also exceptions with this such as variegated and dalmatian.

I guess you find out if the high white is recessive or dominant by breeding the high white to a self as the self is naturally dom?

[snakesRkewl]

It is any misplaced white marking other than an unbroken solid hooded and a self correct (higher than berkshire)? I know that there are also exceptions with this such as variegated and dalmatian.

This is correct.

I guess you find out if the high white is recessive or dominant by breeding the high white to a self as the self is naturally dom?

That would be a good way.
If your odd-eye is dominate then you'll end up with blazes right off the bat.
If it's recessive and the self doesn't carry the recessive high white gene then you won't make any blazes or odd-eyes, just carriers.

That's the tricky part, if the self carries the recessive high white and you make blazes right away you won't know for a fact anything without further breeding.

Once I knew my high whites were recessive I started breeding it into everything I had, lol.

[aldebono]

Thank you so much Jerry. I have been doing a lot of research as to what is a high white and could never get as good of an answer (simple as it is) as you gave me.

I am not 100% sure she is odd eyed but when I was looking at her last night, one shone ruby while the other was black. Could have been a trick of the light and worth looking into. She is also pretty old and I would like to retire her pretty soon. I have other blazes that I need to work out but I am very new into breeding still.

Again, Thank you!