to help a little...
marsupials are animals with a pouch - kanagaroos, wallaby's, koala's etc
Kangaroos can grow big especially males. They box to compete for the females, and the males defense is to hug their threat and then lean back on they tail and disembowel them with the huge toe on their hind legs. If you got one recommend a female.
Wallaby's are timid and skittish even domesticated ones at a park and they like the shade.