[Quadraphinic]

Have you tried seeing about raising the money, or getting the materials and work donated for the fence for the park, and maybe seeing about a discount on admission for small dogs for doing this. Also check with your local Boy Scout group to see if anyone is going for eagle Scout and needs a project to works towards his goal. There are many ways of getting the fence put in at no cost to the city/county, you just need to see what can be done, and who is willing to help. I love all dogs, but am a Yorkie man through and through. Good luck with the fence issue.
Cheers Quad & Gina