Photos of the cottontails inspired nicknames like “Frankenstein bunnies,” “demon rabbits” and “zombie rabbits.” ...

Rabbit papilloma virus is a mostly benign disease that can impact cottontail rabbits in Colorado bitten by infected fleas or ...

Rabbits with black, hornlike spikes growing on their heads and other odd or unslightly protuberances are not dangerous and ...

Human papillomavirus is a common group of viruses that can infect the skin and other parts of the body. While HPV often does ...

Colorado Parks and Wildlife: Scary-looking rabbits were hopping around Fort Collins. These weren’t your standard cute, fluffy ...

Residents of Fort Collins in Northern Colorado are on high alert after stumbling across wild rabbits with black horns and tentacles on their faces. But ...

"It looks like it was black quills or black toothpicks sticking out all around his or her mouth," local resident Susan ...

The unusual appearance of the rabbits has drawn significant concern among locals and even social media users online.

Viral photos have inspired a fluffle of unflattering nicknames, including "Frankenstein bunnies," "demon rabbits" and "zombie ...