As the canine companion to ninja Kiba Inuzuka, Akamaru is a stalwart ally to Team Kurenai in this action-packed manga and anime series. Kiba and Akamaru joined forces while Kiba was still in the Academy. His mother, Tsume, entrusted him with Akamaru, and although one of the dog’s first acts was urinating on Kiba’s face, the two eventually became inseparable.
A devoted pet, Akamaru is overprotective of Kiba, even to the point of trying to drag his master away from his relationship with Tamaki in order to continue training and improving as a shinobi. By the epilogue of the story, Akamaru is old and spends most of his time napping.
Azrael from “The Smurfs”
Even if you only know about the animated cartoon show that began in the eighties, Azrael and his master Gargamel have been trying to catch and eat the blue-skinned Smurfs since 1959.
The characters originally began in a comic by Pierre Peo Culliford, a Belgian cartoonist. Azrael, an orange tabby, loves spending time with the evil wizard Gargamel, even if the wizard does end up blaming the cat for all of his failures. Despite this, he remains loyal to his owner, even if he does like to snicker at Gargamel's failed schemes. Azrael's name comes from an Angel of Death, which is quite terrifying, and great for an evil wizard's pet.
Perry the Platypus from “Phineas and Ferb”
Most of the animals on this list are cats or dogs, but Perry will be the only platypus seen. Even though Phineas and Ferb say that he doesn't do much, it turns out Perry has a secret life – that of a secret agent of O.W.A., who constantly battles against the scientist Heinz Doofenshmirtz.
Doofenshmirtz's dangerous -inators constantly threatened the tri-state area, but Perry was always there to stop him. Nobody in the family knows about Perry's double life, and it has to stay that way, or the family's memories will be wiped and Perry will have to be relocated. Perry loves the brothers, and even Candice, their sister, and doesn't want that to happen.
Jake the Dog from “Adventure Time”
What do you mean he isn't a dog? It's right there in his name! Okay, fine, dogs can't normally talk, change their shape to anything they want, or make bacon pancakes, but here we are anyway.
Not exactly a pet, Jake is still Finn the human's best friend and constant companion, minus the few episodes where they became at odds. He's wise, supportive, and guides Finn through all the troubles he comes across, while also being a good husband and father at the same time. Really, we should all try to be Jake, even if we can't change our shapes to whatever we want.
Courage from “Courage the Cowardly Dog”
Part comedy and part horror, “Courage the Cowardly Dog” was a standout show on Cartoon Network during the nineties. Courage constantly kept his owners, an irascible farmer and his kind-hearted wife, safe from monsters, ghouls, and other terrifying things.
Courage is, as the show's title notes, quite scared of everything, but he has to constantly overcome his fears to battle the monsters. What could be better than a pet that puts it all on the line to protect his family? The show ran for four seasons, showing us ghosts, aliens, mummies, and plenty of other creepy characters.