Bloody fight breaks out over 'cheating wife' penguin

We think of them as cute and cuddly but it seems penguins are actually fighting machines.

Two male penguins have been filmed going toe-to-toe when one returned 'home' and discovered his mate was shacked up with another.

The fight was unbelievably vicious and shocking to watch, but they're not the only animals to have a dark side...

Options to share this content