is rare but mesmerizing when it occurs. Two-headed snakes, for instance, must coordinate their movements despite having two independent brains. This mutation often results from incomplete ...

Just before Christmas, two backyard birders in Michigan were in for the ultimate surprise–a yellow Northern Cardinal. Arlene ...

A mutant Wyoming mule deer with striking blue eyes and a light coat is causing a stirr among wildlife watchers. It's a rare ...

Researchers discovered that mammals - from tigers to humans - have roughly the same number of mutations by the time they die of old age. But short-lived animals tend to burn through their ...

The rare animal's appearance is caused by a genetic mutation A Norwegian photographer has shared images of a rare white reindeer calf he encountered while hiking with friends. Mads Nordsveen ...