those are another good 2. i have 2 cats here and i often forget that others might not have cats. i know i take my cats for granted sometimes. For other dog interactions, i take them to outdoor shows, and start showing them in puppy matches at 3 months. this does 2 things gets them used to the ring and gives them other dog/puppy interactions.

.....for pups that nip while playing I tell children to tell pup in a firm voice "NO BITE!" and then ignore that pup and play with another one. What I do as an adult is hold their mouth closed firmly and say no bite. i hold the mouth closed until they submit.