If it was me, I would stop going to the dog park. There are tons of other ways to get exercise! Hiking, swimming, jogging, ect. In my opinion the exercise from dog parks are not worth the risk of possible issues that could develop. Plus dogs really don't need doggie friends to live a full and happy life, all they need is you. But if you really want to keep the puppy play times, find a dog that plays really well with yours and meet up somewhere other than the over crowded dog parks.
Jade CGC- 05/06/12
“Outside of a dog, a book is man's best friend. Inside of a dog it's too dark to read.”