Ground squirrels also eat insects and bird eggs. Don't consider owning a squirrel if you have dogs or cats. Squirrels despise these two animals, because they know that their lives are in danger when in the presence of dogs or cats. In addition, chipmunks, prairie dogs, woodchucks, and groundhogs are also considered squirrels. Squirrels bury seeds, thereby planting trees for humans.
Squirrels are also useful to humans as dinner, fur coats, and the butt of roadkill jokes.
Squirrels use their tails for balance, as a parachute, as a shade for the sun, as a rudder, to signal danger to other squirrels, and as a wrap for warmth. Squirrels chatter among each other, namely to sound the squirrel alarm if danger is nearby. Most tree squirrels are solitary creatures, although some may share nests in the winter. Father squirrels are especially elusive, usually neglecting parenting responsibilities entirely. A mother squirrel usually has two litters a year.