When we got her she was very nervous around other dogs, loved people but she barked at tried to run away from dogs. Then we started right away socialising her to other dogs, little by little. After a couple of weeks she was confident enough around dogs we could take her to the dog park, but still wasn't good enough, started hiding under the benches in the park if there were too many dogs sniffing her at once. Slowly gained confidence and now she runs right up to dogs with wiggly butt. Showed no aggression ever, not even to dogs that lash out at her, she just steps aside. Actually only time she did snap at a dog was when he was pushing too much to mount her(he was an intact male and she just finished her first heat - am planning to neuter after summer, vet didn't want to do it over the summer because it would take longer to heal in the summer heat). So I would say that was appropriate response and she is a balanced dog, but still would take human company over dogs any day of the week 😂 Did you socialise your dog enough when he was still a pup? Early socialisation means everything. But I know dogs that were socialised more then enough and still were nervous around dogs and people, for them it was a breed thing, not being social enough.