Eastern gray squirrel

"Eastern gray squirrels have a high enough tolerance for humans to inhabit residential neighborhoods and will raid bird feeders for millet, corn, and sunflower seeds. On very rare occasions, when its usual food source is scarce, eastern gray squirrels will also prey upon insects, frogs, small rodents, including other squirrels, and small birds, their eggs and young.[1][12] They will also gnaw on bones, antlers, and turtle shells – likely as a source of minerals sparse in their normal diet."-Wikipedia