Delvil

Houndour is a quadrupedal, canine Pokémon with short, black fur and a red underbelly and muzzle. Its ears and tail are both short and pointed. Two fangs protrude from its upper jaw, and its triangular nose is black. There are white bands on its ankles and rib-like ridges on its back. Houndour appears to have a simplistic, stylized skull on its forehead with the eye orbits creating eyebrow patterning above its actual eyes. It also has circular, red paw pads on each of its three-toed paws.

Houndour is an intelligent Pokémon that forms packs to hunt for prey and shows unparalleled teamwork. As seen in the Pokémon the Series episode Hour of the Houndour, it will not abandon a pack member who is sick. It communicates using various barks and howls. Barks are used to determine the location of a pack member during a hunt, which only they can understand, while howls are used as a declaration of ownership over territory. They are known to be loyal and obedient to their Trainers. Houndour can typically be found around rough terrain. As mentioned in Pokémon Sleep, Houndour is known to howl while it sleeps. It is believed that Houndour is dreaming of hunting alongside the rest of its pack.

(Source: Bulbapedia)