As the credits begin with the main crew Patrick is shown performing the various roles. For example he's shown as the producer, production designer, editor, hair & makeup supervisor, director of photography, casting, etc.
The end credits contain this warning:
Patrick, like most pugs, is very lovable. However, pugs and some other flat-faced breeds can suffer from serious health problems. If you are thinking of getting a dog, please think twice before getting a pug, and speak to your local vet to learn more first.