When a new sitter arrives and a movie star goes missing, Dog Man and Cat Kid investigate, but Petey, the world's most evil cat, complicates their case.

Petey the Cat is out of jail, and he has a brand-new lease on life. While Petey's reevaluated what matters most, Li'l Petey is struggling to find the good in the world. Can Petey and Dog Man stop fighting like cats and dogs long enough to put their paws together and work as a team? They need each other now more than ever -- Li'l Petey (and the world) is counting on them!

Dog Man, the newest hero from the creator of Captain Underpants, is still learning a few tricks of the trade. If only the Chief would throw him a bone every once and a while ... Dog Man needs to dry up the drool, dust away the dander, and roll out of the refuse if he's going to impress the Chief, and he needs to do it fast! Petey the cat is out of the bag, and his criminal curiosity is taking the city by storm. Can the canine crime biter unleash justice...

When Dog Man is sent to the pound for a crime he didn't commit, his friends work to prove his innocence.

Dog Man, the newest hero from the creator of Captain Underpants, is still learning a few tricks of the trade. If only the Chief would throw him a bone every once and a while ... Dog Man needs to dry up the drool, dust away the dander, and roll out of the refuse if he's going to impress the Chief, and he needs to do it fast! Petey the cat is out of the bag, and his criminal curiosity is taking the city by storm. Can the canine crime biter unleash justice...

"This time, Petey the cat's dragged in a tiny bit of trouble -- a double in the form of a super-cute kitten. Dog Man will have to work twice as hard to bust these furballs and remain top dog!"-- "En esta ocasión, el gato Pedrito se metió en un gran problema en el que está involucrado un lindo y dulce gatito. ¡Hombre Perro tendrá que trabajar el doble para salir victorioso y continuar siendo un héroe!"--