We find tripods — those furry canines with three limbs — utterly inspiring. They are the very definition of heroes. Not only have they overcome great odds but they’ve turned those odds in their favor. It’s impossible not to be totally charmed by their uniquely infectious enthusiasm for life. So, to put a smile on your face, we’ve rounded up some of the most active, happy, heroic and talented tripods around. Next time you feel like throwing in the towel, remember these three-legged heroes and keep on keeping on!