Tank

A tank is a term used to refer to an animal with high health and medium or low damage. A good example of this is the Shroovobera from Malgamation's Island. It has 560 health (very high) but only about 32 damage (not very high). The point of playing as a tank is to outlast your opponent by having more health than them, even though your damage may be low. Petaltsaure is kind of a tank because it has high health (670) and medium damage (36).