15 Cool Facts About Shetland Sheepdogs By Allen Abby - While at first glance they look like a smaller version of the Rough Collie, the two are distinctly different breeds. The Shetland Sheepdog stands between 13 and 16 inches tall at the shoulder, but it’s not unusual for them to be over-or undersized. A typical Sheltie weighs about 22 pounds, but a large one can weigh as much as 35 or 40 pounds. Please follow and like us: