Scotch Collie, 15-16 years
From Australia on to Scotland comes the next breed—the Scotch Collie and the largest on this list with a full-grown weight of 75 pounds. The Scotch Collie is yet another bred primarily for herding livestock. They’re extremely intelligent and are superb at anticipating your needs.
They have the highest ratings on the friendliness scale but you can count on cleaning up dog hair all the live-long day. And living to around 16 years, that’s a lot of days. At least they’ll be around should you ever find you’ve fallen down a well.