Squirrels eat peanuts and a wide range of other nuts, seeds, eggs, young birds and fungi. Squirrels also eat small animals, including insects and caterpillars. They tend to store food in their burrows after collecting it to eat whenever needed.
There are thousands of species of squirrels around the world, and they are classified into three groups, including ground squirrels, flying squirrels and tree squirrels. Tree squirrels live primarily around city parks and woodlands, with their diets consisting of berries, flowers, nuts and bark. Flying squirrels live mainly in holes in trees. Despite their name, flying squirrels do not actually fly, they glide through the air. Ground squirrels typically find food in groups to help protect themselves from natural predators.