Local residents described the rabbits as having “black quills or black toothpicks” growing out of their faces.

Rabbits in Colorado went viral—and sparked concern—after growing black, tentacle-like horns on their head and neck. Thankfully, there’s an explanation that doesn’t involve monster bunnies.

Rabbits with horn-like growths have appeared around Colorado, alarming residents. The "tentacles" are due to a virus that is generally harmless.