I'm so glad the Vet said Cassie should be 100%, but I'm sure it will take time for the healing, give her a kiss from Perry and Daisy.
I think dog parks are a wonderful place to bring your dogs like Cassie and all the dog friendly pets. I think people ought to be aware of how their dog would react in certain situations as with Cassie and the dog who is so protective of his or her ball.
We took Perry and Daisy to the dog park in Palm Springs, it was enclosed for small dogs and they would not get along with any other dog or any children. We have tried to socialize them, but when the two of them are together we are afraid they will attack. My point is that you should know what your dog is capable of and if they are like Perry and Daisy, you just don't take them to a dog park. Now we take them to out of the way parks with hardly any people in them and let them run on a long leash. They love that.
But we are very careful with them around other dogs or children, Schnauzers can be cranky and only love their family and close friends, but they are the sweetest most loving dogs with us.