How do dogs never sweat?

Yes, dogs do sweat. But, did you you know that dogs sometimes cannot sweat. They don't sweat because when there is cold air, they breathe it in and then they exhale the warm air that they have in their bodies. Seriously, you should read some kind of informational book about dogs and get more important information rather then "Oh dogs are so cute and cuddly." so that should answer your question about "Do dogs sweat or not."