It’s not just men who flex their biceps, male kangaroos do it, too! Research shows that male kangaroos deliberately strike poses that show off their arms in order to attract a male.
People who are familiar with kangaroos might not be that surprised, as the animal has been a symbol of strength for a while. The Royal Australian Air Force used a boxing kangaroo starting in 1891. For a while, kangaroos would fight men in boxing rings. And, in fact, a male kangaroo biceps are a lot more impressive than you might think.
Picture Credit : Google
