I recently returned from traveling on my boat in Central America accompanied by my two ferrets. Here are three 'cool' ideas that seemed to work well. It is helpful to have a thermometer in the ferret area since humans aren't always the best judge of temperature, especially when we are perspiring and in a breeze. The best method, since you don't have to cage the ferrets, is to use the re-freezable plastic 'bottles'. Simply freeze them, put one or two in an old sock, and place it where the ferret likes to sleep or curl up. You could also freeze a plain plastic bottle with water, but the commercial ones stay cold longer. Secondly, confine the ferreets to their cage. Put a damp towel on top of the cage and aim a fan at the towel, not the ferrets. The evaporation has a cooling effect. Thirdly, if things are really desperate, set a cage on top of a pan of ice. Make sure there is a hammock available up above so the ferrets can escape if they get too cold. Putting water on the ferret only helps for a short time as they seem to dry off rather quickly. And none of mine were at all fond of the process. I am sure others have some ideas. These worked well for me. Shirley and the boating ferrets, Dunkin' and Journey [Posted in FML issue 3833]