Diprotodon

Description
"'Long extinct giant mammals, brought back to life as a part of the Megafauna Project." "The largest known marsupial to have ever lived. As huge as a rhinoceros, it resembles a gigantic wombat.""Diprotodon's a relatively peaceful creature, however its huge pair of forward-facing teeth as well as its strong claws can prove quite dangerous in a combat situation.'"