Because koalas are expensive, they only eat the leaves of several unique eucalyptus trees grown in Australia and can't adapt to the climate in other places, so other zoos (abroad) either buy them back and die, or send them back to Australia. Therefore, Australia has introduced such regulations.
Extended data:
Koalas are simple and honest, and look like bears. They have thick and soft short grayish brown hair, and the fur on the chest, abdomen, inner limbs and inner ear is grayish white. Adult male koalas have a particularly striking brown aromatic gland in the center of their white chest. Koalas distributed in the south need to adapt to a colder climate.
Rough palm pads and toe pads can help Kao hold the branches tightly, and all limbs have sharp long claws. The forefoot has five fingers, two of which are opposite to the other three fingers, just like human thumb, so it can be held with other fingers, which makes koalas hold objects more safely and confidently. On the sole of the foot, all toes except the big toe have sharp claws, and the second toe is connected with the third toe.
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