gun dog

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A dog trained or bred to assist hunters, as in flushing or retrieving game.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A breed of dog used by hunters to find, flush out and retrieve birds and other game.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a dog trained to work with sportsmen when they hunt with guns