"Puppy Bowl" is shot inside a miniature Plexiglas "stadium" that is long by wide. Only puppies between 12 and 21 weeks old are allowed on the show, and there is a height and weight limit due to the size limitations of the play area. Puppies must show that they are well-socialized with people and with other puppies, and that they have the full range of vaccinations. A wide variety of toys are placed inside the "stadium". Although there is no minimum or maximum limit on how many toys may be in the stadium, show producers say that toys which make the loudest noise or which are sausage-shaped get the most attention. Toys are usually switched out every 20 minutes, and often more frequently. Peanut butter is smeared around camera lenses to induce the puppies to lick the camera. About of peanut butter are used for the taping, along with of dry dog food, 500 doggie treats, and 250 toys.