I have two pitbull mixes (adopted from the pound about a month ago), and they are FULL of energy. I go running with them in a field by our house, but they have to stay on their leashes. This hardly puts a dent in their energy level (even though we run around everywhere for about 30 min.). The only way I can really tire them out is by taking them to the dog park (LOADS of fun) because of the very wide open spaces. There are only about 5 to 7 dogs there when we go. I have a pretty big back yard, but it's not very 'safe' for their reckless playing and it only settles them down for about 5 min. of rest! (they are crazy dogs but i love them to death!) Recently, though, I heard that dog parks are a BAD place to bring them, especially because of the little bit of pit in them. What should I do?? How else can I tire them out? Why are dog parks so bad?