a kangaroo is a kind of animal
tree_kangaroo is mammal. stephens_kangaroo_rat is mammal. kangaroo_rat is not mammal. kangaroo_mouse is mammal. giant_kangaroo_rat is mammal. rat_kangaroo is kangaroo. kangaroo_rat is mammal. tree_kangaroo is not mammal. kangaroos is powerful_animals. red_kangaroo is mammal.