As a racing breed, the Greyhound’s tiny percentage of body fat is perfectly suited for their goal. As a breed that can stand up to cold temperatures, though, it’s not so great. No body fat means the muscles and other body parts can be easily seen and studied, and it makes them exceedingly fast. Unfortunately, this also means no insulation, and this breed gets cold very fast. Another fast breed, the Whippet is about two-thirds the size of a Greyhound, which means their intolerance for the cold is very similar to the Greyhound for the same reasons. The smallest of the Greyhound breeds, the Italian Greyhound is about half the size of a Whippet. Since this breed is a small one, its surface area to volume ratio is unfavorable for heat retention. That means it loses heat readily. The Chihuahua may be spunky in nature, but they’re small in stature. Their short hair and tiny features mean they are sensitive to the cold and shouldn’t be out in it for very long. As the smaller version of a Standard Poodle, this breed tends to stand around ten inches the highest point of his shoulders. Their dense coats do provide them with a little more coverage against winter elements than other breeds on this list, but they are still small in size and shouldn’t be subjected to cold temperatures for extended periods of time. These famous Egyptian dogs, which were depicted in hieroglyphic drawings, are large and lean, and they have short hair not suitable for cold weather. You can’t really blame them, Since they originated from hot desert weather, not frigid cold temps. The medium-sized, short-haired Basenji originated from central Africa and is adapted best to warm weather. Their short fur and non-existent down require a sweater for winter play outdoors. Larger and leaner than the Basenji, the Ibizan Hound also has short, thin fur, and as such would do well for some protection during cold months. The Saluki is a large sighthound with gorgeous long fur on the ears and tail, but not much in between. For this reason, they may need a winter warmer for long hours outdoors during cold weather.