What's the difference between a woodchuck and a squirrel?

A woodchuck is a big, fat critter better known as the groundhog. You've probably seen the one they pull out of the hole on Groundhog Day. That is a woodchuck. But technically they are considered a type of ground squirrel. They just don't look like what we think of when we think of a squirrel. Here is more, from Wikipedia:





http://en.wikipedia.org/wiki/GroundhogWhat's the difference between a woodchuck and a squirrel?
woodchuck runs in a hole to hide.


squirrel goes up fork of a trees to hide.