Ground hog makes an excellent sausage. The meat tastes very much like pork, assuming that you dress the animals, and get them cooled down after the kill. Anything can taste bad if you don't take care of it properly and let it spoil.
The Reason that the animal gets its common names of "Ground HOG" and Woodchuck", ( and its Western Cousin, the " Whistle PIG[marmot]) is because of the sweat tasting meat that is similar to pork, both in color and taste.
To make Sausage, bone out the meat, and trim away any fat or gristle. Some prefer to leave the fat there. There isn't always enough fat in these- young ones taken in May and June can have the most body fat-- to help bind the meat together, so you may have to add some pork suet you can buy from your butcher. Run the meat through a grinder- twice, to make sure its cut up properly.
I have a sausage recipe on the forum- towards the bottom of the index page-- that lets you make sausage without a sausage press, or fetal pig intestines to hold the meat. Season to preferred taste, and follow the directions in the recipe. The meat is "cooked by the salt and the liquid smoke, BTW. Its formed by baking it in a oven under low heat. Once formed, you can cut the sausage into slices to serve as paddies, heated in a skillet, or serve them cold on a sandwich.