Mr Whippy (wait for it) The Perentie is the largest monitor species in Australia. Growing to over 2.5m in length, Perenties will eat large venomous snakes, lizards, rabbits, birds & even small marsupials such as wallabies. They’ve got razor sharp serrated teeth, powerful limbs, sharp claws and can run like lightening. This is one lizard you don’t wanna mess with. 💪🏼🦎 Central Australia | Wildman Adventures

Growing up to two feet long, the Gila monster is the largest lizard you can find in the US — when it isn't hiding underground. #AmericasNationalParks | National Geographic TV

Megalania: The Biggest Lizard Of All Time

Komodo Dragon: The Largest Lizard On Earth | 1000 Days For The Planet