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.

Apollo and Brownie are unaware that the apocalypse is at hand, so when their owners don't return and they run out of food and water, the dogs venture into the world, where they team up with a police dog, a flea that quotes Sun Tzu's The art of war, and others in an attempt to survive.

This three-story book features bird, cat and dog as heroes in their own stories, and every story is connected.

The Mystery, Inc. team investigates the appearance of devils at Coney Island. Then, they attempt to celebrate Velma's birthday, but Velma is delayed by helping a poisoned woman stop an attempted murder.

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...

"Meet Pepper and Boo. They are two dogs who do not know much about cats. (Who does?) They wonder why the cat sleeps so much (in their beds!), licks itself so much, what the cat is thinking, and what makes the cat happy. Luckily, the cat can explain."--Provided by publisher.