<human>: Summarize the given text in a few sentences.

Hey all, I have a Miniature Schnauzer, about 1 1/2 years old, and for the most part she's very sweet and loving. She's extremely nice to people, very friendly around strangers, and good with kids. Unfortunately, other dogs are a different story.

For the first year that we had her, we lived abroad (she's from South Korea - we brought her back with us) and didn't have much opportunity to get her used to other dogs. Now that we're back, we've started taking her to the dog park so she can run and play, but instead she usually runs off by herself. When other dogs do approach her, she's cautious at first and is OK with being sniffed, but when they try to play with her she usually barks and snarls. I think she's just scared or shy - her ears stay back and she never goes after the other dogs once they get out of her space. But I want her to be able to run and play, not just stick with Dad and Mom all the time. Any advice?
<bot>: Mini Schnauzer is shy/fearful around strange dogs when they try to play with her, and growls/barks/snarls. Looking for advice.