Animal Altruism: Lending a Helping Paw (or Wing or Fin)

Studies show rats seem to have each other's back. They will attempt to free a trapped comrade and exhibit pain and anxiety responses at the sight of another rat in distress. But rats aren't the only animals that have found a survival advantage in altruism. In fact the animal world is full of species you might not expect to be quite so selfless.

Read the full story ➞