I'm just going to quote from the YouTube description of this video.
Native snails in NZ are big, mean and carnivorous. They hunt their prey by stealth. When the attack comes, it is sudden, ruthless and fatal.
This is the best thing I've heard since the guy from the Smithsonian National Zoo told me about the time he was bitten by a sloth, a story which included the words, "It all happened so fast."
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.