If your dog can play with one other dog it does NOT mean your dog is socialized. It means your dog knows how to play one way, and most other dogs will not tolerate that one way of playing. Socialize your dogs!

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If your dog can play with one other dog it does NOT mean your dog is socialized. It means your dog knows how to play one way, and most other dogs will not tolerate that one way of playing. Socialize your dogs!
Wondering how to socialize your dog? Follow this dog socialization checklist and help your puppy become a friendly and confident adult.
if your dog isn't friendly, you should probably keep it out of the dog park
if your dog is tiny, explosively pees on you when you pick it up to keep it from biting my dog (who actually meets the weight requirement to be in this part of the dog park), and causes you to feel like the victim of this silly and avoidable situation then you should probably reconsider why you became the guardian of another living being altogether