Once, we got a dwarf pyre in rescue. She was only about 40 pounds, and was quite the stocky little thing. She had no health problems, but she had a very ornery temperament. She was (is) a great dog with people, but boy, was she a princess! She thought her life should be lying around on some big, fluffy bed, being admired and petted at her whim. She was not a big fan of other dogs, and frequently caused fights. She got lucky, and an older, retired couple with no other pets adopted her, and they'd been looking for a dog to spoil rotten.
Here's a pic of Summer, she was pulled from a kill shelter in rural Kentucky (the pics were taken prior to a good grooming, she was actually quite stunning, and snow white).