Hello everyone. I am new here so apologize if this is in the wrong location. I have a 7 month old male GSD. He weighs just over 80lbs. Despite how big he is and how much he’s growing, I can’t seem to keep weight on him. I feed him over 3x the recommended daily amount based on the food chart on his food (I give him about 8 cups a day), and I’ve switched his food 3 times to see if that was the issue (costco puppy food -> blue buffalo wilderness large breed puppy food -> zignature protein blend all age food). He still looks extremely thin and he whines at his food bowl all day long. I’ve recently started adding in various meats to his food in hopes that will help, but he still acts hungry all day. The vet has checked him and said he looks healthy, just a bit thin, but no worms or anything. Is this normal for this breed? I’ve never had a dog that had so much trouble staying full or keeping weight on...but I’ve never had a shepherd before either. Thank you for the help!