ive hunted with german shorthair pointers that could point rabbits or birds they can be great bird dogs but when they get started hunting rabbits they are not that great, but then again I have no desire to hunt rabbits, just birds.
In Germany, dogs that can't hunt all game are considered failures. Did you know that their dogs are also used for tracking big game and dispatching vermon. The more one dog does the more valued he is.
There are specialized dogs over there too. But the average Joe couldn't afford more then one dog. So they developed breeds that are known as versatile breeds. If a versatile breed dog is used to hunt one species in one manner, where is the versatility?