If physiological similarities between chimpanzee and man mean that a disease pattern is likely to follow a similar course in our two species and be affected by similar preventative or curative agents, is it not logical to infer that similarities in the central nervous systems of chimpanzees and ourselves may have led to corresponding similarities in cognitive abilities? And that chimpanzees may experience emotions similar to those of the human primate they so closely resemble? And have a similar capacity for suffering?
