According to some reports, only one in half a million raccoons are born without the pigment that gives them the distinctive black mask, stripe tail and fur markings. (source)
Squirrels have a one in a 100,000 chance of being albinos. They have white hair, white skin and red eyes. They also have vision problems. Albino squirrels have a hard time in their habitat since their white color makes them lose their camouflage advantage and can easily be spotted by predators. (source)