I'm not familiar with the height differences in Shelties. How many inches in height are we talking about?

The current trend in the majority of larger breeds seems to be an overall increase in height and weight. I've often wondered if it may have something to do with the constantly improving changes in diet over the years since the breeds were developed.

When the older breeds were being developed, it was taken for granted that nursing bitches would be thin which often led to improper nourishment for the puppies. Nowadays breeders are so much more aware and they see to it that the bitch is well nourished, provided with the proper vitamins and that all pups have equal time at the milk bar. When they're weaned they're fed good quality puppy chow, not left to scrounge for leftover table scraps.

Dietary improvements through the years have most certainly had the same effect on humans so maybe it's time to rethink the height standards in some breeds!