well it depends on what kind of huting their duck and that good for labs and deer and any dog is good for that that has a good nose coon hunting coon dog duh or houndbassets have the best noses then...
IF your gonna buy a hunting do i say go for a bloodhound and a beagle if you want a small dog go for the beagle if you want a big dog go for the bloodhound
the lab is the best duck hunting dog breed because i had a freind that trained his dog (pistle) to hunt and she can bring back like 3 ducks at a time and one time i was with them and we shot 5 ducks...