Wild Kangaroos very early in the morning feeding on the grass at Pt Vernon, Hervey Bay, Queensland, Australia. Great picture of our iconic Kangaroo. Wild Kangaroos are always vigilant and can be dangerous if approached in mating season. The Kangaroo has large toenails that can rip open a human and kill them. Kangaroos often fight among themselves and can lean back on their tails to kick with both legs.