Patrick McDonnell is an American cartoonist and author, best known for creating the comic strip Mutts. Launched in 1994, Mutts features the adventures of a dog named Earl and a cat named Mooch, highlighting themes of friendship, love, and animal welfare. In addition to his work in comics, McDonnell has written and illustrated several children's books, often focusing on nature and kindness. He is also an advocate for animal rights and has collaborated with various organizations to promote pet adoption and welfare initiatives.