Prepare cookie dough and press into cavities of pan. Bake and cool according to pan directions.
Outline and pipe in cookie with tip 5 and white icing (smooth with finger dipped in cornstarch). Use tip 3 and pipe icing to outline and pipe in ears and nose. Use tip 2 and black icing to pipe dot eyes and pull-out whiskers. Pipe tip 5 dot tail in white icing.