Bad Kitty is a children’s book series published by Macmillan and created by author and illustrator Nick Bruel. The series centers on a mischievous cat whose attempts to behave often lead to comic chaos. Bad Kitty may be trying to eat vegetables, stay quiet at a birthday party, or cope with everyday events, but trouble tends to follow. The stories combine lively humor with playful depictions of feline antics, making the character appealing to young readers.

The range includes picture books, chapter books, and graphic novels, offering formats for different reading stages. Titles explore familiar experiences and themes such as school, holidays, family, pets, and new challenges. The series also includes books that invite readers to draw and make comics, extending the fun beyond the stories themselves. Macmillan’s Bad Kitty page features books in the series and directs readers to the Bad Kitty website for activities, videos, and other extras.