Our 16 week old puppy has a bad habit of grabbing her leash and chewing and playing tug with it at first on walks. She picked up this habit because she sometimes would grab onto pant legs to do the same and my wife thought the leash was a better choice so didn't correct this behavior. Now I just stop and tell her to leave it and she usually lets go and then I praise her alot. Soon she is more interested in sniffing the ground and gives up on the leash. Sometimes I get the feeling she grabs the leash and wants to walk me instead of the other way around so I don't tolerate it. Any suggestions would from others would be welcome.