Why do hamsters have black eyes?

Although most hamsters have black eyes, some have red or brown eyes. This is due to the fact that hamsters are partially blind, and in the day can only see shadows of people and things around them, which is why you have to be careful not to wave above them or make sudden movements. A hand above the hamster could seem like a bird of prey to it. However, during the night, hamsters can see much better as they are naturally nocturnal animals.

The red pigment in red eyed hamsters is a result of them being albino.