Whatever caused this, it is certainly one of the more unusual cats round. The popular theory is she is a product of two embryos fused together to form a chimera. Really hard to get the different eyes and colours this way unless this is the reason.
"To find out would require genetic testing, said Lyons. With samples of skin from each side of the cat, "we can do a DNA fingerprint—just like on CSI—and the DNA from one side of the body should be different than the other."
There is some Youtube footage at