1. The muzzle grasp
When two dogs are hanging out and then one appears to bite the other’s muzzle, it can be a bit shocking to the owners, but it isn’t something to be worried about. This is just a social behavior dogs got from their wolf ancestors. The dogs are affirming their social relation: the dog being grasped is insecure and making sure it’s still the other dog’s pup.
Muzzle grasping is usually done between dogs who know each other well, but insecure dogs can also ask a human can do it. If your pup approaches you while puffing its nose, you can gently grasp its muzzle and reassure it that you’ll take care of it. He’ll be happy to know it.