A prairie dog is a mammal. It is about the size of the rabbit, which lives underground. It has a brown or grey coloured court with black tipped hair and a black tipped tail. The underside of the prairie dog is light tan in coloured. It has short legs and sharp claws to help it dig its home. These mammals are primarily in the prairies and they feed on grasses, roots, seeds and leafy plants. They dig tunnels and make small mounds around the entrance to the tunnels to prevent rain from entering them. Prairie dogs are organized into coteries. Each coterie usually consists of one male, three or four females and several young ones. Each female in a coterie produces one litre 2 to 10 pups annually after a gestation period of thirty four to thirty seven days of as many as 2000 prairie dogs may live in one prairie dog town. Farmers and ranchers have been known to poison prairie dogs because of the perceived threat to crops and livestock.