He's a therapy dog to Puss in Boots. He started out as one of Mama Luna’s pet cats, because he disguised himself as a cat. He met Puss, and they became fast friends, at least in Perrito's eyes. He then followed Puss and Kitty to find the Last Wish before Goldilocks and "Big" Jack Horner, even though he himself didn't have a wish of his own. Through their journey, he would ultimately touch the hearts of the cats and fully form their unity, known as "Team Friendship".