Roar.
Ursus horribilis, or as we know them best, Grizzly Bear, is up next! North America, Scandinavia, and Asia is where you’ll find the aggressive grizzly. Additionally out of all the bear species, the grizzly is the strongest and biggest. Seems like this is something that belongs on the health insurance plan, now doesn’t it?
So Not Dumbo
Dumbo fans, look away! African Elephants are known to be be quite aggressive and fierce. Furthermore, as the largest land animal, their brains alone weigh something like eleven pounds.