The Chinese crested dog is a hairless breed of dog. (en.wikipedia.org)
A dogs normal resting temperature is 101.5 F, although if your dog is a hairless breed their temperature could be one or two degrees higher. (dogbreedz.com)
On the other hand, you will find some cats who do want to wear clothes such as the Sphynx cat, which is a hairless breed and may appreciate wearing a sweater in the middle of winter. (animalwised.com)