Curious grey squirrel standing on a dirt ground with a blurred natural background, United Kingdom, Europe

Curious grey squirrel on a dirt background, looking at the camera, United Kingdom, Europe

Tree squirrel (Paraxerus cepapi), Mashatu Game Reserve, Botswana, Africa

Arizona gray squirrel (Sciurus arizonensis), Madera Canyon, Coronado National Forest, Arizona, United States of America, North America

Grey squirrel (Sciurus carolinensis), Leighton Moss, RSPB Reserve, Silverdale, Lancashire, England, United Kingdom, Europe

Eastern gray squirrel (Sciurus carolinensis) in a crab apple tree, in captivity, Minnesota Wildlife Connection, Sandstone, Minnesota, United States of America, North America

A grey squirrel in a hazel tree, United Kingdom, Europe

Eastern Gray Squirrel (Sciurus carolinensis)

Eastern gray squirrel, Sciurus carolinensis, Saint Lawrence River, Quebec, Canada, North America

Animals, Rodents, Squirrel, Common Grey Squirrel trying to get peanuts out of a secure bird feeder attached to a bird table.

Red squirrel (Sciurus vulgaris) on the trunk of a cherry tree in summer, Moselle

Eurasian red Squirrel (Sciurus vulgaris), Ardennes, Belgium

Eurasian red Squirrel (Sciurus vulgaris), Ardennes, Belgium

Red squirrel (Sciurus vulgaris) on a branch, Ardennes, Belgium

Red squirrel (Sciurus vulgaris) on a branch, Ardennes, Belgium

Red squirrel (Sciurus vulgaris) and its reflection in a pond in summer, Moselle

A Red Squirrel (Sciurus vulgaris) explores his surroundings in the Cairngorms National Park, Scotland.

Red squirrel (Sciurus vulgaris) eating a nut in a pond in summer, Moselle, France

Red squirrel (Sciurus vulgaris) standing on a moss and eating a peanut, England

Eastern grey squirrel (Sciurus carolinensis) perched on a branch and watching. A case of melanism. This squirrel is a grey squirrel with a defective pigment gene given by the fox squirrel (Sciurus niger), which makes the colour of its fur darker. Mauricie region. Quebec. Canada

Eurasian red Squirrel (Sciurus vulgaris) on a branch, Ardennes, Belgium

Red fox (Vulpes vulpes) catching an eastern grey squirrel (Sciurus carolinensis), Montreal Botanical Garden. Quebec. Canada

Red squirrel (Sciurus vulgaris) eating a nut in summer, Moselle

Red squirrel on a branch, Sciurus vulgaris. Kaamanen, Finland

Red squirrel in snow, Sciurus vulgaris. Kaamanen, Finland