Mama dog steps in to calm down her playful pups before giving them a stern lecture. Play-fighting is actually beneficial for puppies as it helps them learn important social skills and establish dominance. Supervised play-fighting also helps them control their bite force and understand other dogs' body language. However, if one puppy dominates the other or if aggression becomes an issue, intervention may be necessary. Consulting a veterinarian or animal behaviorist is always a good idea if you're unsure. By providing guidance, you can ensure your puppy has a healthy and happy childhood.