How to stop a puppy mouthing or biting
Mouthing, Nipping and Biting in Puppies

While it is normal for puppies to bite, chew and mouth on peoples' hands, it is not a habit that should be carried over into your dog's adult life. Follow these steps to train your puppy so he'll stop biting and will learn to be gentle.

The good news: in the vast majority of cases, puppy biting and mouthing is EXTREMELY normal, for several reasons: Puppies explore the world with their mouths. They go through an uncomfortable teething process that lasts for 2-3 months. They play hard with their siblings, often using their teeth to (successfully) instigate play and attention.

Expert Tips on How to Stop Puppy Mouthing and Nipping
Puppy mouthing and play biting hurts, but with patience, consistency, and these expert tips you can teach your puppy not to bite humans.
Understanding Puppy Biting And Mouthing Habits At 16 Weeks Before the Gallery
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