Jagd terriers have there own mesage board where they are used for all sorts of hunting. You can ask questions and talk to experienced owners on this website.
http://xsorbit29.com/users5/americanjagdterrier/index.php

I use my Jagd for hunting hogs. Mine does not open or bark on scent trail at all. She is very gritty to game animals but very affectionate to people and excellent with other dogs. She has exceleent scenting abilities as well, and see no reason they would not be great for hunting any sort of game. I do not believe that the terrier breeds are for everybody, they require alot of daily exercise and attention or can become terrors and aggressive. I also hunt Jack Russel and Airedale terrier crosses. These hunting bred terriers are not ment to be back yard pets, they need to be worked in order to make them good dogs. Researching bloodlines before buying any breed of dogs will help determine what temperment of dogs you are going to end up with. The Jagds temperments and traits vary from bloodline to bloodline just as any breed does. Some are smooth coated and others very hairy. Some may bark on trail and other silent. Some are 14lbs and some get to be 28lbs. Research from individual breeders will help get the right dog for your needs.