Border Collies are exceptional dogs — sometimes a bit too exceptional for the less-enthusiastic human companion. This breed needs a lot of attention and activities.
They are superb herders and extremely bright for a canine. And while they love humans, they are most loyal to their immediate companions and less so with strangers or acquaintances.
Temperament: Affectionate, smart, energetic
Height: 19-22 inches (male), 18-21 inches (female)
Weight: 30-55 pounds
Life expectancy: 12-15 years