My dog (Otis) is just over 6 months old and we live in central NH. So, we're just starting to get some warm weather right now. He's black and has a fleece coat, which we are keeping shaved pretty close right now. However, if we're outside (even sitting around...not necessarily playing or hiking), he will get really hot in a short period of time. I provide him with plenty of water and our backyard has many shaded spots. Any advice on how often I should bring him inside for a "cool down" nap?