Actually, I remember hearing about a study that proved baby chicks could count. They placed a number of desirable items one by one behind an obstruction and then took them away one by one. The chicks would search more often behind obstructions where less was taken away than was originally placed there.

I can't find the exact link with the methodology as I remember it, but here's one link: http://www.guardian.co.uk/science/2009/apr/01/chicks-mathematics-arithmetic-sums

Ha. My English 101 class read this as an exercise in perspective.