Stores that sell clothing for construction and roadway workers also often sell cooling bandanas or fabric neckbands filled with water-absorbing crystals. Next time you buy one for yourself, either for work or just to get you through the summer days, buy one for your dog.

Soak it and then tie it gently around the neck of a large dog or wrap and tie it around the back and chest of a small dog just behind the front legs. Now and then, refresh it with your water bottle and the two of you should be good to go for much longer on a hot day.