Cairn Terrier

Toto in The Wizard of Oz was a Cairn, and the breed has exactly that scruffy, game charm. Cairns are hardy, independent and curious, more inclined to investigate than to pick a fight, but one that has spotted a mouse will not hear a word you say. Diggers by trade, they take their name from the rock piles they worked. The shaggy weatherproof coat is meant to look natural and needs light hand-stripping rather than clipping. Ocular melanosis, an inherited eye condition that can lead to glaucoma, is worth asking about.