I've been watching a The Crocodile Hunter episode about Komodo dragons, and Steve Irwin kept speaking about the animals being in "food mode", in which they apparently change their behavior to one of a killing machine. He said if bark falls of a tree when they're in food mode, they'll snap it.
Is it for real? I googled "food mode" but nothing interesting came up. Which animals have a food mode like this? Is it restricted to reptiles? Does it have a scientific name? Can I read about it somewhere?