Answer:
Kangaroos are mammals members of the marsupials species, which characterize by carrying their offspring in a pouch, and they particularly have lage powerful feet (Macropodidae family) adapted for leaping.
The question above is obviously an interesting joke to cause amusement, worthy of a clever answer like one of these:
1. The Kangaroo went to the psychiatrist after feeling a bit jumpy.
2. and/or to get in touch with it's inner child.