A remarkable thing happened at The First Annual Francis Crick Memorial Conference held at the University of Cambridge, July 7 in U.K. A group of prominent neuroscientists signed a proclamation declaring human and animal consciousness alike. Called The Cambridge Declaration of Consciousness, it states:
We declare the following: The absence of a neocortex does not appear to preclude an organism from experiencing affective states. Convergent evidence indicates that non-human animals have the neuroanatomical, neurochemical, and neurophysiological substrates of conscious states along with the capacity to exhibit intentional behaviors. Consequently, the weight of evidence indicates that humans are not unique in possessing the neurological substrates that generate consciousness. Nonhuman animals, including all mammals and birds, and many other creatures, including octopuses, also possess these neurological substrates.
Read more http://www.care2.com/causes/scientists-proclaim-animal-and-human-consciousness-the-same.html