We have a huge fenced in back yard. Our four little yorkies just love to run and play however in this terrible heat I really watch them. I only allow them outside for no more than 10 minutes at a time every couple of hours. We have a pool and our Max loves to jump in about a million times to retrieve his ball and swims to the steps. However it is still to hot even for him so when I go out to the pool in the afternoons I have to inch my way out to the deck without little dogs who don't understand where Mom is going and why it is so hot! They hate cold wheather and also very hot wheather. We really watch them so carefully here in the heat.