Scientists at the University of California San Francisco (UCSF) may have discovered a cause of aging in the brain.

Strange wart-like growths on deer called fibromas may look scary but typically don't harm the animals unless they interfere ...

A group of rabbits in Colorado with grotesque, hornlike growths may seem straight out of a low-budget horror film, but ...

The slew of images popping up online show various deer roaming through backyards and the wilderness while covered ...