Monkey math: Baboons show brain's ability to understand numbers

Opposing thumbs, expressive faces, complex social systems: it's hard to miss the similarities between apes and humans. Now a new study with a troop of zoo baboons and lots of peanuts shows that a less obvious trait -- the ability to understand numbers -- also is shared by humans and their primate cousins.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/B...