Siamese Cat Colors
The ears, paws, and tails of Siamese cats are darker than the rest of their bodies, but the animals are not born that way. They are usually born pure white, then later they get the dark tips.
Why?
When they are born, the kittens come from an environment (the mother cat's uterus) which is the same temperature everywhere. But once they are out in the world, the tips of their ears, paws, and tail become cooler.
Since the enzymes (catalytic proteins) that make hair pigment in Siamese cats work better at a cooler temperature, their extremities turn dark while the rest of the body stays light. In a cold climate, the whole cat may become dark.
An article about the "Siamese gene" and its effects:
>^.^<
------------------
Pinhead,PinUp at 56
,Pinintheneck,Pindead,PinM&M, PinMoney, Pinocchio Pincushion, Pinwheel, Pinochle