Odd eye rat

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I'll be the first to admit I have a very limited knowledge of rat genetics. I breed solely for feeders and have never kept one as a pet but I really liked this girl and decided to keep her. Is this odd-eye trait typically genetic and can it be passed to offspring? I also have heard that mega colon can be an issue with rats with this trait as well. Any input or comments on this are greatly appreciated.

looks really cool hopefully you can reproduce it in the offspring.

My experience with my male I used to have never reproduced any but I do get odd eyed rats occasionally out of the blue from my colony.

It is completely random, my mom used to be Post Grad headmaster at the local university and the biotherium was part of her responsibilities. As a kid you can imagine I spent days and weeks in that place playing and learning everything about mouse, rats and guinea pigs (cuys) breading and keeping.

After thousands of litters I came to the understanding that it is completely and absolutely random. And yeah, crazy eyes were always my favorites.


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It's not exactly random. Odd eyes are usually caused by a white marking over the eye. So you can increase your chances by breeding rats with blazes and head markings.

Any rat w blazes are prone to carry mega colon. I advise to not breed these. Its not a nice thing to see baby rats die bc they cant go to the bathroom.

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Megacolon is more common in dominant blaze and dominant white spotting (DWS). Recessive blaze and variegation on the h locus is not linked to this, though any rat has the potential to carry megacolon. There are people working on breeding megacolon out of their DWS lines. If you work with DWS you must be prepared to cull any rat that shows sign of megacolon, and to watch out for late onset megacolon.