What’s the difference between a Chihuahua and a Great Dane?
One gene fragment controls the size of dogs. Of course, this may be cold comfort if you’re cleaning up after the Great Dane.
So this means with a little genetic engineering, does this mean we could create a miniature german shepard or a giant shih-tzu? Or — Zeus help us — a Jack Russell Terrier the size of a St. Bernard? I suppose the size change might also affect temperament, though.













