The insanely cute Westie is one of the most popular small terriers among pet owners. Standing 10 to 11 inches at the shoulder, with dark piercing eyes, compact body, and an adorable carrot-shaped tail wagging with delight, the Westie’s looks are irresistible. Beneath the plush-toy exterior, though, beats the heart of true working terrier. Bred to hunt rats and other furry critters, Westies are surprisingly strong and tough. The all-white coat should be hard to the touch, never soft and fluffy.