While rural squirrels are more protective of their territory, and they have more natural predators to deal with. Squirrels claim an area, usually one to seven acres in size. They will build their nest in this space. They will find, and store their food in this area. The squirrel must keep other squirrels from invading this space.
Squirrels mark their territory by urinating on the surrounding trees.
This warns an intruding squirrel, that it's trespassing. Gray and Fox squirrels hide their food in many places, so if another squirrel or animal were to find it, the entire year's supply would not be lost. Sometimes they hide food temporarily, until they can move it to a more convenient location. This supply will then be covered with leaves, or other debris, which creates a cold and moist storage environment. Squirrels get food from many sources, if there is an abundance of food the squirrel will store it for the future.