This is Venus, a three year old chimera cat. Chimera cat is one individual organism, but genetically its own fraternal twin. A chimera is typically formed from four parent cells (either two fertilized eggs, or two early embryos that have fused together).
Neko Nirvana: Cat-Napping In The Lap Of Buddha - Page 3 of 3
Did you know that pure white cats with blue eyes are deaf? And if they have one blue eye and one other colored eye, they are deaf on the side with the blue eye. I had a white kitty with two different colored eyes once. So beautiful!