Answer:
The term "kangaroo" covers over 60 species of macropods, but for the purpose of this answer, kangaroo refers to one of the four large species of marsupial; the Red Kangaroo, eastern Grey, Western Grey and Antilopine kangaroo.
Kangaroos are mainly hunted by man, who actively seeks to cull their numbers, followed by dingoes and wedgetail eagles.
Introduced predators such as foxes, wild dogs and feral cats will hunt joeys.
Prior to the extinction of the thylacine (sometimes known as the Tasmanian Tiger), kangaroos would have had to defend themselves against this creature, the largest of the carnivorous marsupials.
Smaller kangaroos, such as wallabies, rat-kangaroos (not kangaroo rats), potoroos, pademelons and bettongs are hunted by quolls and pythons.