"The muscles on this thing… I was like, ‘This thing's just got out of jail' or something," martial arts teacher Mick Moloney said of the marsupial Bailey Richards is a writer-reporter at PEOPLE.

Roger, a kangaroo known around the world for his impressive muscles and feats of strength, has died. The Kangaroo Sanctuary, Roger’s home in Australia’s Northern Territory, shared the sad news ...

An adult male red kangaroo can stand over 1 1/2 meters tall ... It's lined with powerful, but flexible, muscles and ligaments. To keep the joey safe, mom can tighten those muscles to shut the ...