A common problem with puppies is general mouthiness, but when an owner is trying to clip the puppy’s leash onto its collar it can go beyond annoying to infuriating . The typical response seems to be to tell the puppy “NO!” and try to get it to settle by sheer force of will and a stern voice. I have not found that this is the most successful method and it generally results in a frustrated owner and a non-compliant dog.
So, what’s an owner to do? The answer is surprisingly simple actually! Use treats to get the the dog to look at you, then lure him into a down and place the treats between his paws as you clip the leash either on or off. If the dog will not do a down, then simply put the treats between his front paws and as he leans down to eat them, snap on the leash. You can use a small handful of kibble as the treats, but I find that adding in a few really yummy treats helps to motivate the pup to be still. Here is a wonderful little video illustrating this technique:
One last hint for leash mouthiness, if your dog is toy motivated, give him a stuffed toy or ball to hold while you snap on the leash. It is really, really hard to hang onto Mr. Bear and bite your leash at the same time.
Puppies bite — and thank goodness they do. Puppy biting is a normal, natural, and necessary puppy behavior. Puppy play-biting is the means by which dogs develop bite inhibition and a soft mouth. The more your puppy bites and receives appropriate feedback, the safer his jaws will be in adulthood. It is the puppy that does not mouth and bite as a youngster whose adult bites are more likely to cause serious damage. (Ian Dunbar, DogStarDaily.com)
Here’s Dr. Dunbar talking about the importance of bite inhibition and allowing your puppy to use his mouth:
I do understand that excessive biting can be frustrating, so if you cannot get your puppy to inhibit his biting or if your puppy seems to be biting out of fear, seek out the help of a positive reinforcement trainer or a certified animal behaviorist so that you can nip that problem in the bud.