Abstract: A cover for a computer mouse has a concavo-convex shell having a concave lower surface shaped to conform generally to the upper surface of a computer mouse and a front section that tapers forwardly and downwardly from a front end of the mouse to form a rounded nose. The shell has two apertures suggestive of eyes extending through it, each overlying a respective one of two finger-actuated buttons on the mouse, and though which, in one embodiment, the buttons on the mouse can be manipulated by the fingers of a user's hand. The shell further includes a pair of parallel, longitudinal depressions suggestive of ears formed on its upper surface. The depressions extend rearward from a corresponding one of the apertures, and are respectively adapted to receive the lower surface of a respective one of the user's fingers and align it with a respective one of the buttons.