Sounds like what we call a Jagd Terrier. The types of hunting we do in the US would not call for a dog like this. The types of hunting where dogs are used is pig and deer hunting. Hounds are sometimes used to drive deer and there are breeds of dogs used to bay hogs and bull dogs, dogos and Pitt Bulls are used to catch the pig while the other dogs bay. Some dogs are used to tree Lions and bears also.

I live in Hawaii and we hunt pigs with pitt bull crosses with hound or pointer to give them a better nose. The bull is to give them the bite to stop a pig. The best size dog is 50 to 70 pounds for this type of hunting.

So we don' t really use the Jagd Terrier in the US. Too small. But I always wondered if they would work for pig hunting. They would be too small to catch any sizable pig alone but just as Jack russels and fox terriers work to flush and chase and bay, I would bet the Jagd terrier would work in the same way and might be able to catch and kill small pigs up to 50 pounds. Or you could take one dog and a gun if the bush is open enough and use them to find by winding and flush pigs into the open so you could get a shot off.

Otherwise, I don' t know if anyone uses them in the U.S. Supposed to be a very scrappy dog. They can kill Badgers.