My gsp's are out side dogs and i hunt them in all kinds of weather from moderate to darn cold with no problem in fact they seem to like it as long as there is no more than 6" to 12" of snow wet wind it doesn't matter to them they just want to hunt. in fact my male i can't keep him out of the creeks and ditches we hunt hu wants to hunt both sides and swims or wades across regularly. I do keepan eye on them for signs of hypothermia but have never seen a problem remember a dogs normal body temp is about 110 degrees a high protien feed will help them use that energy to keep warm and a good warm dry travel box is a must not inside but self contained or like mine int the back of the truck with a topper on it with lots of dry straw