Chimera

Having worked with cats for so long I was aware of "Chimeras" (Pronounced Kaimera) but never had the pleasure of seeing one. Often described as the most beautiful accident that happens in nature, a Chimera cat is a cat whose cells contain two types of DNA, caused when two embryos fuse together, genetically it is it's own fraternal twin.
I have never either seen a male tortoiseshells cat, they are almost as rare as hen's teeth, but they do exist and are usually sterile, most male tortoiseshell cats are indeed said to be chimeras.
So knowing that Chimera cats existed it never crossed my mind that this could also exist in dogs, I just never though about it, until last night. The power of the internet is that we continue to learn every day .. fascinating!  A GSD and a BSD.