When it comes to fearless battlefield feats – there can be few to match that of the crab that amputated its own claw. Filmed on the remote Pacific island of Clipperton, the crustacean is initially part of a raiding party on the nest of a group of Boobie birds. However, he gets separated from his comrades and comes under a vicious attack. The angry birds relentlessly peck him and in the end badly injure one of his claws. But this is no defeat for the crab. Instead of feeling sorry for himself he courageously cuts off the limp limb and...