What size is a full-grown Icelandic Sheepdog?

A full-grown Icelandic Sheepdog is medium-sized and can weigh 21 to 39 pounds, with females typically staying at the lower end of this range. Males measure about 18 inches tall at the shoulder, while female Icelandic Sheepdogs are slightly shorter at 16.5 inches. 

Despite their smaller frame, Icelandic Sheepdogs are sturdy and have high stamina. They also have a good balance of strength, agility, and athleticism for herding and outdoor activities.