http://en.wikipedia.org/wiki/Animal_rights
Animal rights, also known as animal liberation, is the movement to protect non-human animals from being used or regarded as property by humans. It is a radical social movement insofar as it aims not only to attain more humane treatment for animals, but also to include species other than human beings within the moral community by giving their basic interests — for example, the interest in avoiding suffering — the same consideration as those of human beings. The claim is that animals should no longer be regarded legally or morally as property, or treated as resources for human purposes, but should instead be regarded as legal persons.
The Seattle-based Great Ape Project is campaigning for the United Nations to adopt a Declaration on Great Apes, which would see gorillas, orangutans, chimpanzees and bonobos included in a “community of equals” with human beings, extending to them the protection of three basic interests: the right to life, the protection of individual liberty, and the prohibition of torture. This is seen by an increasing number of animal rights lawyers as a first step toward granting rights to other animals.