
There are diferent forms of Dwarfism, and the Achondroplatic type are viable (those with short legs) and appear in all breeds as a fluke from time to time. My breeder had one in a litter, and it didn't become obvious until she was about five weeks old. She kept her, as she didn't know if it would make her prone to other health issues. She had legs a bit more than half length, and looked like a large Vallhund!
There wer found to be no health issues, and she could easily have found a pet home, but Ann kept her, and often would laughingly say, this is the culmination of 30 plus years of selective breeding. She thought it quite funny to be reminded that nature will sometimes throw a spanner in the works.
I beleive that there are other forms of dwarfiwm, (e.g. Pituatary Dwarfism) that GSD, and I think Mals get occasionally) probably other breeds too) that really do cause the dog real problems, and an early death, and in my view these should be PTS when discoverd.
When i saw the Jimmy Hill article I did worry that it might start a demand, and would hate4 for anyone to produce them deliberately. If they want a short legged breed then get one!