犬薄荷[inuhakka] catnip (Nepeta cataria)
愛犬[aiken] pet dog
愛犬家[aikenka] lover of dogs
一犬[ikken] one dog
狂犬[kyouken] mad dog

狂犬病[kyoukenbyou] rabies
軍犬[gunken] war dog
軍用犬[gunyouken] war dog
犬猿の仲[kenennonaka] loggerheads

狗肉[kuniku] dog flesh
魚狗[shoubin] kingfisher (esp. the common kingfisher, Alcedo atthis)
天狗[tengu] long-nosed goblin
天狗風[tengukaze] sudden gust
天狗話[tengubanashi] boastful story

羊頭狗肉[youtoukuniku] using a better name to sell inferior goods
狗尾草[enokorogusa] green foxtail (species of annual grass, Setaria viridis)
走狗[souku] hound
天狗茸[tengutake] panther cap (species of poisonous mushroom, Amanita pantherina)