Since puppies are born without hands, the only way they have to explore the world is with their mouths. And you may have noticed that your puppy is quite the explorer. Everything goes into those little mouths, including your fingers, and those baby teeth are like little needles. Ouch!
It's completely normal for puppies in their litters to bite each other in play. When they engage in this "bitey-face" game, they learn a little about how to inhibit the strength of their biting. If one puppy bites another too hard, that puppy probably will yelp and stop playing. If that happens enough times, the biter learns to apply less pressure.
But puppies are covered with fur and we're not. The same level of bite pressure that is appropriate during puppy play can hurt us and even break the skin. The inhibition they learn in the litter helps, but it's usually not enough to teach young puppies how to properly interact with humans.
Download our DogSmith Puppy Nipping Guide here