The Biggest Kangaroos Evolved Long Arms to Fight Over Females

Male kangaroos and wallabies, like a lot of seemingly quiet grazing animals, get into knock-down drag-out fights over females. They obviously don’t have antlers or horns to spar with, but they’re perfectly willing to grapple rivals with their forelimbs and kick the crap out of each other with their big hind feet. » 7/01/15 9:00pm Wednesday 9:00pm

This Gigantic Ancient Kangaroo Didn't Hop — It Actually Walked

For millions of years there lived a rather large species of kangaroo in Australia called sthenurines. Weighing in at 550 pounds and featuring a 6'6" frame, these Pleistocene creatures must have been an awesome site — an animal made all the more remarkable by virtue of the fact that they walked around on their feet… » 10/16/14 6:20am 10/16/14 6:20am