Biting is most common in young puppies and new dogs
Especially in play and while teething. It's up to you to train your puppy or dog what is acceptable and what is not. Most dogs and puppies are generally loving, sweet, adorable, affectionate and wonderful 99% of the time. Only 1% of the time does something specific happen that makes the dog bite. Watch the video to see what you can do to prevent your dog from biting.