One of my teachers used to feed the squirrels nuts. He says that if you give them walnuts in different numbers they do different things:

1 nut = eat it
2 nuts = put them in mouth and run off
3 nuts = one in each cheek one in the middle and run off
4 nuts = one in each cheek one in the middle and hours spent trying to get the last one
5 nuts = take a few and run off


Not sure how true that is, but it is an amusing thought to say the least, thinking about that frustrated squirrel trying to get that one last nut