One wild birthday party could be around the theme of a zoo party wherein kids come in animal costumes or just animal hats. You might want to have a purely doggie theme wherein kids will choose to be any kind of dog breed he wants---a dalmatian, a shepherd, or a spitz. I prefer to let the kids choose any animal costume or hat---they could come as alligators, zebras, giraffe, sheep, etc. It will surely be one colorful and noisy party of animals. The games can revolve around this theme like making animal sounds or movements, etc. It's fun, try it!