The hamadryas baboon is a harem holder where one male mates with multiple females.

In Africa, we have the bush meat trade, which means that, on a very large scale, animals are being killed in the forests and sold in the cities as a luxury food.

We justify the inequalities by saying some people are just better and smarter than others and the strong should survive and the poor can die off.

Empathy as a complex emotion is different. It requires awareness of the other person's feelings and of one's own reactions. The appropriate reaction may not be to cry when another person cries, but to reassure them, or even to leave them alone.

A chimpanzee who is really gearing up for a fight doesn't waste time with gestures but just goes ahead and attacks.

There is little evidence that other animals judge the appropriateness of actions that do not directly affect themselves.

In humans, the family prevents infanticide. Next to language, the core family, consisting of a mother, a father and children, is the greatest difference between us and other primates.