Hyena

Hyenas are wild dogs. They are relatively small though. Their midsections are very small with short hind legs, and have a very decided hump on their back. They have a much wolf-like build. Spotted and striped hyenas are very different. Striped hyenas, or brown hyenas, will fake death when attacked by a lion, dingo, etc. However, spotted hyenas will attack viciously and defend themselves.

Striped and spotted hyenas are different in mating too. The striped hyena, the father, will leave after his cubs are born. He takes no part in raising them. However, the spotted hyena dad sticks around and helps the mom take care of the kids. There IS one thing that they both don't do- neither of the hyena moms regurgitate food for their young ones.

Hyenas have been known to have been man-killers ever since they were discovered, dating back B.C. Human hair has been found inside fossilized hyenas, and they have been known to attack people. Hyenas have a weird way of knowing who is weak in defense, who is sick- because this last paragraph explains that:

Hyena victims tend to usually be women, young children, and sick people. In one case, just 2 hyenas managed to kill 27 people in one spree. In another, 19 children 4 years old and under were killed. And also, in a 6-week spree, 9 other children were thought to be killed and taken away by hyenas. You definitely  don't want to cross paths with these guys when they're in a mood!!!