Animals who are venomous or dangerous in some way to prey or man
Komodo Dragon. Besides being the largest lizard on the planet, they are the only other poisonus lizard besides the Gila Monster. Their saliva contains enough parasites and nasty stuff to kill anything the dragon bites! Komodo Dragons have been known to bring down water buffalo by biting them and then following them for days or weeks as the infections kick in!
Australia's Freshwater Crocodile lives in freshwater billabongs and rivers in northern Australia. They are smaller and less ferocious than their dangerous relative, the saltwater crocodile, but still have many sharp teeth for feeding on fish and frogs, and other small animals.