All kangaroos, no matter how big they are, have one thing in common: the hind legs with long feet are strong and powerful. Kangaroos jump instead of running, jumping up to 4 meters and up to 13 meters, which can be said to be the highest and farthest mammal. Most kangaroos live on the ground, and it is easy to distinguish them from other animals by jumping from their strong hind legs. Kangaroos balance themselves with their tails during jumping. The tail can be used as the fifth leg. The kangaroo's tail is thick, long and full of muscles. It can not only support the kangaroo's body when it is resting, but also help the kangaroo jump faster and farther when it jumps.

All female kangaroos have a pouch with four nipples. "Cubs" or baby kangaroos are raised in the pouch until they can survive in the outside world.

Kangaroos belong to the genus Kangaroo. There are marsupials, Mammalia, Chordata, and Animal Kingdom. They are famous mammals in Australia and occupy a very important ecological position in Australia. Kangaroos have short forelimbs and well-developed hind limbs, and often lift their forelimbs, sit on the ground with their hind limbs and jump instead of running. Kangaroos are generally 2.6 meters tall and weigh about 8 kilograms.

Kangaroos are often used as national symbols in Australia. For example, the green triangle kangaroo is used to represent Australian manufacturing. Kangaroo pictures often appear on Australian highways, which means that kangaroos often appear nearby, especially when driving at night. Kangaroos have poor eyesight and are curious about the lighting, so they will jump to "see what's going on". However, because of the high reproductive rate of kangaroos, they don't need to be responsible even if they are accidentally killed, and special people will take away their bodies.