Os direitos dos animais

This work has the purpose of presenting the current state of the debate concerning animal rights, both in the Portuguese legal system and in foreign systems. In order to do so, it starts with an analysis of the evolution of the legal status of animals through History, and the status they have achieved in today’s legal systems. The aim of this work is to reflect upon the challenges that would result from a change of position regarding this subject, from the current legal classification as things, to a complete personalization based on the Constitution, or through the creation of a tertium genus between Men and things, that would stress the fact that animals are sentient beings.