While the Grinch in his many reincarnations always steals the show, his faithful pooch Max is always there to help him out. At the top of Mt. Crumpit, even the surly Grinch has space in his shrunken, shriveled heart for a pet.
While a villain’s pet usually lands in the sycophant role, Max is kind-hearted, warm, and affectionate, whether or not the Grinch likes it. His goodness is in stark contrast to his green-furred owner. Once the Grinch learns the truth of the holiday, and his heart grows three sizes, Max is fully on-board as they return all the presents, trimmings, and roast beast.
Shiro from “Crayon Shin-chan”
Also called Lucky or Whitey depending on the dub you're watching, Shiro (meaning white) is a fluffy Maltese puppy that child Shin-chan found in a cardboard box in an early episode of this cute anime series.
Despite being a beloved member of the family, Shiro is often forgotten by his owner, due to Shin-chan's hectic nature. He's developed a talent for scavenging since his meals end up sometimes being few and far between. He is mostly dog-like, but a few human elements are present, such as being notably responsible and incredibly careful. In a number of specials, Shiro can speak.
Dogmatix from “Asterix”
This tiny white terrier is the perfect companion for a huge Gaulish warrior – they even have the same response to danger (attack). Dogmatix – known as Idefix in the original French – first appeared in the fifth Asterix book, “Asterix and the Banquet,” which came out in 1965.
He's the only animal character among the main characters of the series and is often relegated to a minor comedic role. Asterix and Obelix would often get into shouting matches about whether or not Dogmatix should join them on adventures. He, like the rest of the characters, has drunk the magic potion that makes the Gaulish warriors so strong.
Muttley from “Wacky Races”
Though not the kindest dog, Muttley was always there to help his owner, the villain Dick Dastardly, try and cheat his way into the winner's circle. Even though he helped set the schemes up, he took great delight in watching them blow up in Dastardly's face, always delivering his memorable wheezy laugh when it happened.
Despite being one of the lesser-known animals on this list, his impression of the dog sidekick can't be understated – how many even on this list roll their eyes and go along with what their masters want? That's all thanks to Muttley.
Kagechiyo from “Ninja Hattori”
Kagechiyo is a black and white cat that has the Koga symbol on his forehead, with large teeth and a shrill voice. He's a fierce, gung-ho warrior that never backs down, and often works as Kamumaki's messenger and fights alongside him. Kagechiyo is, however, not as evil as his boss, and will sometimes help Hattori with his missions.
He wears his treasured red scarf for luck and likes to sing when in a good mood. Like most cats, he enjoys fish. Seeing as he is a cat and his owner also has a dog, it's natural that the two animal characters frequently end up fighting.