The grass tip lets you have fun with the frosting, and there is little chance of not doing it perfect! The unevenness of the frosting makes the fur look more real. If you don’t have a grass piping tip, spread frosting on thick and use the back of a spoon, lifting up to create texture in the frosting.
Freeze the extra cupcakes unfrosted tightly wrapped up to 2 months. Loosen wrap and thaw at room temperature 2 to 3 hours.