La saison 3 de Pet Star a démarré sur Animal Planet le lundi 29 novembre 2004, c'est la saison en cours, elle comporte pour le moment 16 épisodes.
Host Mario Lopez is joined by a panel of celebrity judges as "Pet Star" searches for the best pet performances. Each week, animals and their trainers or owners demonstrate their unique abilities and compete against other pets in front of a live studio audience. Weekly winners receive $2,500 and a chance to be in the final showdown when all 15 finalists compete for $25,000 in cash and prizes, and the ultimate pet star is crowned.