We often see people running after dogs in dog parks yelling "no" and scolding their dog for normal canine behavior. On the other end, there are people who are oblivious to their dog's bullying or their dog's fear and stress."
Dogs have their own individual styles, both during play and while issuing an invitation to play. While some use the traditional play bow to engage another dog, others will stand still and bark repeatedly. Some will nip at the other dog’s legs."
For more information about dog-dog play: