if your pet is used to being inside a 70-degree house, he is going to get cold very quickly when he steps outside into much colder weather.
if you have found yourself in a situation where you need to provide your dog with additional heat but cannot just turn up the heater in your home, you may have to consider using a space heater. ceramic space heaters are considered safer for use with kids and pets because they do not get hot to the touch and your pets will not be burned by touching the heater.
exercise caution if you decide to use a ceramic space heater to keep your dog warm. 