Don't panic, it's a common problem for puppies to bite, but it CAN be remedied. Understand that it's normal behavior for a dog to chew things, because it's fun and stimulating for the dog, and it exercises their jaws. However, it's important that they're taught to only chew on things that they're supposed to, the same way you would teach a cat to scratch their claws on a scratching post and not furniture or wallpaper.
To get the puppy to stop biting, do this:-
- get on the floor and begin playing with the puppy. Only ever encourage them to play with a toy, never with your hands, as this will teach them to bite.
- if the puppy goes to bite, hold out a toy for them to grab instead. This teaches the puppy that biting and chewing on their toys is fine, but biting and chewing on people's hands isn't acceptable.
- if the puppy does bite, or if their teeth even accidentally touch you, loudly yell 'OW' or yelp as if they've hurt you and immediately stop playing.
- wait for a few minutes, then play with the puppy again. If the puppy bites again, then again loudly yell 'OW' or yelp as if they've hurt you, then turn away and ignore the puppy, putting them in a 'time out' if necessary.
- give the puppy a treat or praise if they don't bite, so they come to associate not biting as good
- don't disturb the puppy while they're eating, drinking, sleeping, resting or playing with a toy, and don't make sudden movements around them or tease them either. Doing any of these can cause the puppy to bite out of fear or frustration.
- be consistent. If you continually do this, the puppy will quickly learn that biting ends the fun.
Hope this helps.