Under crowded conditions the friendly social interactions between members of a group become reduced, and the destructive and aggressive patterns show….

...In little more than a single century from 1820 to 19450, no less than fifty-nine million human animals were killed in inter-group clashes of one s….

There is nothing biologically unusual about a homosexual act of pseudocopulation. Many species indulge in this, under a variety of circumstances..

People who keep dogs live longer on average than those who do not. This is not some kind of pro-canine campaigning fantasy. It is a simple medical fa….

The idea that it is funny to see wild animals coerced into acting like clumsy humans, or thrilling to see powerful beasts reduced to cringing cowards….

This unusual and highly successful species spends a great deal of time examining his higher motives and an equal amount of time ignoring his fundamen….

We never stop investigating. We are never satisfied that we know enough to get by. Every question we answer leads on to another question. This has be….

Biologically speaking, if something bites you it's more likely to be female..

Life is like a very short visit to a toy shop between birth and death..

The city is not a concrete jungle, it is a human zoo..

Looking back now on the whole sexual scene we can see that our species has remained much more loyal to its basic biological urges than we might at fi….

It must be stressed that there is nothing insulting about looking at people as animals. We are animals, after all. Homo sapiens is a species of prima….

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

We read off the many signals that our companions' clothes transmit to us in every social encounter. In this way, clothing is as much a part of human ….

We may prefer to think of ourselves as fallen angels, but in reality we are rising apes..

The female covers her breasts, and then proceeds to redefine their shape with a brassiere. This sexual signaling device may be padded or inflatable, ….

A true bond of friendship is usually only possible between people of roughly equal status. This equality is demonstrated in many indirect ways, but i….

In a social environment that is ever crowded and impersonal, it is becoming increasingly important to reconsider the value of close personal relation….

We are to put it mildly, in a mess, and there is a strong chance that we shall have exterminated ourselves by the end of the century. Our only consol….

Aquatic animals suffer from the disadvantage that they cannot scream when in pain, so we find it hard to gauge the degree of their agony. If fish cou….

Monks, nuns, long-term spinsters and bachelors and permanent homosexuals are all, in a reproductive sense, aberrant. Society has bred them, but they ….