What was key to the Shetland Sheepdog's success on the Shetland Isles?
Answer
Their intelligence and smaller stature used to manage diminutive livestock
The Shetland Sheepdog originated on the Shetland Isles, where their intelligence and smaller size were vital for managing the smaller livestock found on those farms and crofts.

#Videos
10 Interesting Old English Sheepdog FACTS Ed&Mel - YouTube
Animal Facts - Sheepdogs - YouTube
Related Questions
What was the historical moniker for the Old English Sheepdog?What was the practical reason behind docking the tails of Old English Sheepdogs?What two layers compose the double coat of the Old English Sheepdog?Despite shedding very little, what maintenance does the Old English Sheepdog coat require?Which characteristic regarding coloring typically disqualifies an Old English Sheepdog from AKC registration?Which ancient sheepdog breed was reportedly brought to Iceland by the Vikings over a thousand years ago?How did the Icelandic Sheepdog's role typically differ from the Old English Sheepdog's historical function?What was key to the Shetland Sheepdog's success on the Shetland Isles?For historical herding dogs like the OES and Icelandic Sheepdog, what did barking often function as?Why might a Shetland Sheepdog sometimes be reserved around strangers?