1. Squirrels are known for constantly foraging and hoarding food… and for stealing! They lose 25 percent of their food to theft by birds and other squirrels. 3. A handful of these mischievous creatures was first released in 1877 in New York’s Central Park, where the population has since flourished. 4. Squirrels are surprisingly fast; at top speed, they can run 20 mph. 5. Their superhero-like talent to reach seemingly inaccessible bird feeders comes from the ability to rotate their hind feet 180 degrees.