Mix together all ingredients for cake. Split in half and place 1/2 in each of two greased and floured 9-inch round cake pans.
Bake at 350° for 20-25 minutes. Remove from oven and allow to cool.
Remove cakes from pans. Leave one cake intact, and cut the other using the template below.
Assemble cat shape using template below. Set cake aside.
In a mixing bowl, whip together shortening and butter. Add vanilla and mix well.
Add powdered sugar in 1 cup amounts until frosting reaches desired consistency.
Reserve some frosting to color for decoration.
Add cocoa to remaining frosting and mix well.
Use frosting to decorate cake as desired.