A real life aggressive kangaroo very aggressive towards humans and will often kick out with its hind legs. As resulting injuries can be serious when they start attacking. If they were to be punched directly in the face, they will lower their guard and stop attacking for a little while. You can't push them over because of their they used to balance and also use it to get in a better kick. Very angry and wants to harm you badly and is very relentless will not stop attacking until impossible.