So I have a 13 week old Great Dane puppy who is roughly 30 pounds and lives to play.....and bite! I understand that mouthing is typical puppy behavior but because of her size it is becoming a greater issue than normal. She gets very mouthy when she gets really excited and wants to play, but she also bites if if try to pet her sometimes? Now I have never hit her or done any kind of physical correction but I do use a firm "no bite" and sometimes that helps. I have also tried ignoring her, walking away, yelping, and putting her in her kennel for 10 seconds but nothing seems to be working? The behavior isn't getting worse, it's just the teeth are getting bigger and so are the sores. Also, after I say "no bite" she sometimes lunges at me and barks, and I know I'm humanizing this but it seems like she's talking back at me! So does anyone have any positive reinforcement tips using the clicker because she is very food motivated but I don't really know what behavior I should be reinforcing?