Bake a sheet cake the size that you will need. Draw the dog shape on the cake according to the picture using round tip, size #3 or #5.
With star tip, size #16 or #18; fill in the tongue with
red icing. Next, fill in all of the black areas with black icing and
the same star tip.
Next,
fill in the side and top with white icing.
Finally, outline the dog with black icing (following the above picture) using round tip, size #5.