Pine processionary development, pine processionary caterpillars are highly irritating to the skin. Contact with the hairs of the caterpillar can cause severe rashes (urticaria) and eye irritation. Some individuals may have an allergic reaction to the caterpillar's hairs. 5th stage larvae can eject hairs when threatened or stressed; the hairs, which have the form of harpoons, then penetrate and irritate all areas of exposed skin nearby with an urticating protein. Allergic reactions may follow in susceptible individuals on subsequent exposure to the hairs. The pine processionary is an economic pest in coniferous forests in southern Europe. It is controlled to some extent
The Human Animal (TV series) published by BBC Books on 21 July 1994. The Human Animal (TV series) The Human Animal: A Personal View of the Human Species is a BBC nature documentary series written and presented by Desmond Morris, first transmitted in the United Kingdom from 27 July 1994. The series was produced in association with Discovery Channel. Morris describes it as "A study of human behavior from a zoological perspective." He travels the world, filming the diverse customs and habits of various regions while suggesting common roots. At the close of episode one, Morris said: Erratum: Firewalking has been explained. The accompanying book,