• 犬いぬ — dog
• 子犬こいぬ — puppy
• 愛犬あいけん — beloved dog
• 番犬ばんけん — guard dog
• 猟犬りょうけん — hunting dog
• 犬小屋いぬごや — doghouse

犬 is a pictograph representing a dog. It is used both as a standalone word and as a radical in many animal-related kanji.