(Videos) Sharks, crocodiles and porcupines: most dangerous animal attacks in sport

2. Porcupines on the ski slope

Downhill skiing provides an adrenaline rush like few other sports, with the sheer exhilaration of speeding down a slope hard to match.

To up the ante though, why not go down a mountain backwards? With a porcupine attached to your leg. By its teeth.

This porcupine from the Alta ski resort in Utah has quite a track record of “interacting” with skiers.