Under crowded conditions the friendly social interactions between members of a group become reduced, and the destructive and aggressive patterns show a marked rise in frequency and intensity.

A true bond of friendship is usually only possible between people of roughly equal status. This equality is demonstrated in many indirect ways, but it is reinforced in face-to-face encounters by a matching of the posture of relaxation or alertness.

Sexual behavior in our species goes through three characteristic phases: pair formation, precopulatory activity, and copulation, usually but not always in that order. The pair-formation stage, usually referred to as courtship, is remarkably prolonged by animal standards.

No matter how old we become, we can still call them 'Holy Mother' and 'Father' and put a child-like trust in them.

There are one hundred and ninety-three living species of monkeys and apes. One hundred and ninety-two of them are covered with hair. The exception is a naked ape self-named Homo sapiens. The zoologist now has to start making comparisons. Where else is nudity at a premium.

The age of a child is inversely correlated with the size of the animals it prefers.

The response of teenagers to their idols is relevant. As an audience, they enjoy themselves, not by screaming with laughter, but screaming with screams.