Simply because their arms are shorter and less muscular than their legs.
Do kangaroos really punch. An animal expert has revealed why a kangaroo put a hunting dog in a headlock - before it was punched in the face by the dogs owner. Look at these paws. Kangaroos get into boxing match on quiet Australian street - video Two kangaroos are caught on camera in an intense boxing match on a suburban Australian street.
The marsupials can be seen punching. Its thought that kangaroos have a kick of 850 PSI. Look at the claws.
The red kangaroo from Australia has a lightning fast double kick that can tear you open from sternum to top of legs. Its their kick that we are warned to be wary of. Male kangaroos are the ones who engage in a fight.
Contrary to popular belief kangaroos dont normally try to box or punch each other says Festa-Bianchet. They also pee in the pouch because they cannot go anywhere else in the first few months of their lives. A kangaroos punch is not particularly effective.
Their feet are extremely long and have a sharp claw in the center that can rip apart flesh. Sometimes kangaroos will jump up to 30-feet in the air before they extend their hind legs to kick giving them more power to their punch. Yes they usually punch each other with the use of their hands and sharp claws.
The kangaroos legs are very powerful. Their muscular tail is used for balance when hopping and as another limb when moving about. A zebra has the most powerful single kick.