My 5 month old Newfie puppy is not your average Newfie. She is extremely high strung and temperamental, something akin to a lab or German shepherd.. She is in excellent health and is growing perfectly. She has one rather annoying problem! I take her on several walks a day, just to try to curb some of her energy.. While I'm walking her she will flop down, roll on to her back and refuse to get back up, treats, toys, coaxing, pulling, tugging.. Nothing will get her up short of scooping her up and carrying her. If she chases the cat I chase after her (she loves to make me chase her) and when I get to her she flops! She walks beautifully during obedience classes... If she is out and doesnt want to go in... Flop, if she is in and doesn't want to go out... Flop! My back is killing me. She is not in anyway food or toy motivated. Any ideas to stop the flop would be most appreciated