a sentry/security/patrol/guard dog

an attack dog

A (guardian) dog spirit; a attendant/familiar spirit: In Japanese mythology an inugami (lit. a "dog spirit") is a type of shikigami (式神), similar to a familiar spirit, resembling, and usually originating from, a dog, and most commonly carrying out vengeance or acting as guardians on behalf of their 'owner'.

(rare) A dog god

A term of affectionate for a dog or puppy. Compare English doggy.

(rare) female dog, she-dog, bitch

hunting dog; hound

A tracker dog

a male dog

a male dog