Oh yes, one last point. A Xolo or Chinese Crested is at the whim of the sun and the air. A naked LGD would be a pretty unhappy dude. And indeed, most LGDs, created to stand outside and protect hoofed stock from predators, are either white, fawn, or light-brown colored, hence solar energy absorbtion isn't high on their list of concerns. But I just received an excellent series of email questions and comments from a person whose black Standard Poodle is estactic when clipped short in the summertime.
Most mammals roll in dirt or mud for additional protection against sunburn.
Magnifying the sun's rays is bad news. Surface water cannot change state to water vapor is the air above it is already full of molecules. We humans, especially human males, sweat like stuck pigs in our youth, but loose that ability to thermoregulate well when we age. That constant tugging as the flank stretches and contracts during motion can really annoy some dogs. She is of two minds in the bright summer sun.