[Crimson Dynamo]

Originally Posted by Niamh.

And that's a proven fact is it? I never heard that before

Books by Desmond Morris

The Naked Ape (1967) — an unabashed look at the human species. The book is notable for its focus on humanity's animalistic qualities and our similarity with other apes. Reprinted many times and in many languages, it continues to be a best-seller.
The Human Zoo (1969) — a continuation of the previous book, analysing human behaviour in big modern societies and their resemblance to animal behaviour in captivity.
Intimate Behaviour (1971) — this book examines and analyses any physical contact acted out by human animals. From clapping, to having a hair cut, to hand jive, to patting on the back, to hugging, to babe suckling, to copulation...