Psychological news from the world of primates: chimpanzees demonstrate altruism
New ground rule: if members of a species have saved human lives or demonstrated the capacity for altruistic behavior, DON'T EAT THEM. That means no cats*, dogs, horses, parrots, dolphins, or monkeys on the dinner table, thankyouverymuch.
*Except for around our place, where "Nemo! Paws! Off the table, dude!" is a frequent utterance. *sigh*