Well, it turns out that the canine world has its own version of the fountain of youth, and it's all about the nose! Recent research has shown that small, long-nosed pooches, known as the dolichocephalic doggy elite, tend to outlive their snub-nosed counterparts. That's right, the Whippets, Miniature Dachshunds (I think Dachshunds and I think pushy broad. I do), and Shetland Sheepdogs of the world are strutting their stuff well into their frisky teens, with median lifespans of about 13.3 years. The Lancashire Heeler, in particular, is practically a canine Methuselah with an ancient median age of 15.4 years. If you're wondering about the purebred versus crossbreed debate, the purebreds are wagging their tails a little longer, with a median life expectancy of 12.7 years, compared to 12.0 years for the mixed breeds. As for the battle of the sexes, female dogs are winning by a whisker, with a median life expectancy of 12.7 years, compared to 12.4 years for males. If you're i...