Squirrels can rotate their hind feet 180 degrees to grip bark while running down trees headfirst — one of the few mammals that can. Each autumn a single squirrel buries thousands of nuts in scattered caches; many are forgotten, and the forgotten acorns sprout into oak trees, making squirrels accidental forest planters. A squirrel's front teeth never stop growing and must be filed down by constant gnawing. Squirrel coloring page with a bushy tail curved up behind the back, holding a single acorn in both front paws.