If he barks after he has learned to tree squirrels

If he barks after he has learned to tree squirrels

If he barks after he has learned to tree squirrels, take him to a woodchuck country. He will soon get to working after woodchucks and while they won't all tree, some of them will. Should he get one in a hole, hollow log or tree, get it for him if possible and let him kill it, and see that he doesn't get hurt much. If he trees one, shoot it out for him, and after he has gotten a few, and trees another, go to where you can see him, but do not let him see you, and watch until he starts to leave; then go to him and by so doing, he will learn to stay and wait for you.

Source: Dogs Manual