12 Celebrity Animal Attacks: Release the Beast! (PHOTOS)

A squirrel mimicked a crazed teenage girl and latched on to One Direction’s Niall Horan in October 2012, landing the singer in the hospital with torn ligaments. "I got attacked by a squirrel in Battersea Park,” the 1D member revealed to Capital FM. “They're dangerous. It's rare.”

Squirrels be nuts.