Meanings

police dog

cynic

eating like a dog

dogs and horses

mangy cur

dying in vain

dog sled

cats and dogs (as an example of a bad relationship)

rendering what little service one can

dog that knows (does) tricks

adult dog

fine dog

Eskimo dog

pariah dog

domestic dog (Canis lupus familiaris)

wild dog

Pomeranian (dog)

tosa (dog breed)

old dog

rabies