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 evolves from Houndoom starting at level 35.
It is smart enough to hunt in packs. It uses a variety of cries for communicating with others.
|Union Cave||Cave Floor|
|1||Leer||Reduces the foe's Defense.||-||100%||30 (max 48)|
|1||Ember||An attack that may inflict a burn.||40||100%||25 (max 40)|
|4||Howl||The user howls loudly to raise its spirit, boosting its Attack stat.||-||-%||40 (max 64)|
|8||Smog||An attack that may poison the foe.||20||70%||20 (max 32)|
|13||Roar||The target is scared off and switched. In the wild, a battle against a single Pokémon ends.||-||100%||20 (max 32)|
|16||Bite||An attack that may cause flinching.||60||100%||25 (max 40)|
|20||Odor Sleuth||Enables the user to hit a Ghost type with any type of move. It also enables the user to hit an evasive foe.||-||-%||40 (max 64)|
|25||Beat Up||The user gets all party Pokémon to attack the target. The more party Pokémon, the greater the number of attacks.||-||100%||10 (max 16)|
|28||Fire Fang||The user bites with flame-cloaked fangs. It may also make the foe flinch or sustain a burn.||65||95%||15 (max 24)|
|32||Faint Attack||Draws the foe close, then strikes without fail.||60||-%||20 (max 32)|
|37||Embargo||It prevents the target from using its held item. Its Trainer is also prevented from using items on it.||-||100%||15 (max 24)|
|40||Foul Play||The user turns the target's power against it. The higher the target's Attack stat, the greater the damage.||95||100%||15 (max 24)|
|44||Flamethrower||A powerful fire attack that may inflict a burn.||95||100%||15 (max 24)|
|49||Crunch||Crunches with sharp fangs. May lower Defense.||80||100%||15 (max 24)|
|52||Nasty Plot||The user stimulates its brain by thinking bad thoughts. It sharply raises the user’s Sp. Atk.||-||-%||20 (max 32)|
|56||Inferno||The user attacks by engulfing the target in an intense fire. It leaves the target with a burn.||100||50%||5 (max 8)|