Cool Dog Heartbeat Sweat Shirt! Here is some information on heat stroke in dogs, and how you can avoid it. First of all, dogs become overheated much easier, and much more than people do. The reason for this is because of two factors: the fact that they are wearing their fur coat all year round, and are only able to sweat out of their paws. Since the only area that can produce sweat is the paws, your dog must be able to release heat another way. This comes from panting, which unfortunately is much less effective and requires much more effort.