As weird and concerning as they appear, the virus that causes the dark, wart-like horns or tentacles to grow on cottontail rabbits is relatively common and usually not anything to worry about.

Viral photos of wild rabbits with unusual black horns or tentacle-like growths sprouting from their faces have people asking what is going on with the furry animals. • Video Above: Threatened vs. endangered species Over the last few weeks,

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