Hi, had our GSD puppy 3 weeks, 11 weeks old now. Had Gsds before but not had a puppy for 13 years. We knew it would be hard just forgot how hard. The worst thing is the biting and the manic zoomies. We seem to have one day when we think she is calming and then wham back to the crazies. Tried everything, carrying antlers, chew toys, frozen carrots, leaving the room for 30 seconds but when she is being hyper nothing will work. She did have a bad episode with 36 hours of the runs 10 days ago which took a while to sort via the vets so this must have stressed her. I am starting to wonder if the food may be causing problems. It's the same food the breeder used, grain free and good quality but it is duck and she refuses to eat duck treats which seems strange, she will eat the kibble. Sorry for the long post, just looking for words of wisdom from other pup (land shark) owners !