It was in 1826 that the Zoological Society was founded in London. In 1867,the title was shortened to zoo. Later on,in 1892, the Englishman Henry Salt, in his book Animal Rights, was one of the first to protesr against keeping animals in cages. He did not like the idea because of the way the animals were confined and also the way animals in zoos “lose their character.” Since then, many people have criticized zoos for these reasons. However zoos claim that their role is to educate the public and conserve animals. These aims are not bad in themselves. It is the way in which they are carried out that we must consider.