That is a very interesting question. Now, allow me to lead you into the answer. Dogs have something called FUR. :)
rspca
They Attack.
their fur protects their skin so that they don't be cold on
Dogs, like many animals, have hair to keep them warm in the cold weather, and to keep from getting sunburned when it is hot. The hair insulates and protects their skin.
a sweater :)
All dogs get cold. Dogs that have thick fur are more tolerant of cold. Dogs with short hair get cold more quickly. If it is too cold for you to be outside without a coat, it is too cold for your dog.
it protects them them from the cold
Dogs wont get a cold sore from people.
They have fur that protects them from the cold 102801
it depends on what kind of dog it is some dogs don't have a lot of fur so their cold but other dogs do have a lot of fur so their not cold!
dogs
When in good health, a dogs nose is cold and wet.