If your knowledge of kangaroos is limited, the way they use their extremely muscular tail may surprise you. According to The Guardian, the tail acts as a ‘third leg’ propelling kangaroos forward, “with as much force as its front and hind legs combined.” [source]

During fighting, combatants adopt a high standing posture and paw at each other’s heads, shoulders and chests. They will also lock forearms and wrestle and push each other as well as balance on their tails to kick each other in the abdomens. [source]