Usually on Pet Finder, If a cat is part Siamese, Manx etc. They will list "Siamese" on the main page. When you actually click on the picture you will notice at the top that it says, Siamese Mix. The white Aby that the shelter has is probably and Aby crossed with a domestic shorthair or a rare albino Aby. Which I believe do exist. The people at the shelters aren't idiots jenluckenbach. At least out here in Canada they aren't. When you go to work at a shelter you develop a love for cat or dogs and start studying breeds. Someone could have gave the white Aby up for adoption and listed it under white Aby. It's not the shelter it's the people that bring their animals in that list it a a certain breed or mixed breed!