Houndour is a dog-like Pokémon with short, black fur. It has a red underbelly and snout. Houndour has short, pointed ears and a tail. Houndour’s fangs protrude out of its mouth, and its nose is dark in coloration. There are white bands on Houndour's ankles, and more rib-like ones on its back. Houndour appears to have a simplistic, stylized skull on its forehead, with the orbits looking much like ‘eyebrow’ patterning commonly seen on dogs. Houndour also has circular, red-colored patterning on the underside of its paws.
Houndour hunting packs show off unparalleled teamwork by communicating through the use of barks and howls.
Houndour normally travel in packs. They are very protective of one another and will not abandon any of its pack if they are hurt. It can be presumed that, as Houndour hunt in packs, they are fairly smart. Houndour use a variety of cries, and different ones for pursuing prey and communicating with others. Houndour convey their feelings using different cries, and corner prey by checking each other’s location using barks. Around dawn, Houndour’s ominous howl echoes through the area to announce its ownership of its territory.
Although Houndour inhabit deep woods, they may also appear near volcanic areas. Their dark fur allows them to blend in at night.
Houndour are predatory Pokémon that mainly eat small mammals.
This Pokémon was unavailable prior to Generation I.