Passage: Ethologist Jane Goodall stated in the 2009 book The Inner World of Farm Animals that "farm animals feel pleasure and sadness, excitement and resentment, depression, fear and pain. They are much more sensitive and intelligent than we ever imagined." In 2012, a group of well known neuroscientists stated in the "Cambridge Declaration on Consciousness in Non-Human Animals" that all mammals and birds (such as farm animals), and other animals, possess the neurological substrates that generate consciousness and are able to experience affective states. Eugene Linden, author of The Parrot's Lament, suggests that many examples of animal behavior and intelligence seem to indicate both emotion and a level of consciousness that we would normally ascribe only to our own species.

Question: What did the neuroscientists say?
all mammals and birds (such as farm animals), and other animals, possess the neurological substrates that generate consciousness and are able to experience affective states