Height: 12.5 to 15 inches at shoulder
Weight: 13 to 16 pounds
Coat: Medium-length and dense
Life span: 10 to 12 years
Breed Group: Working Dogs

With six toes on each foot--all of them double- or triple-jointed--and an amazing range of motion, this agile dog was used to scale cliffs and rob puffin nests of their eggs. Along with his acrobatic talents, he has a knack for barking and digging, making him a good choice only if you're prepared to give him lots of supervision and training. He's very tough to housetrain.