Why Large Dogs Die Young

When I was on vacation a couple of months ago, I posted a link to an article entitled “Why Small Pups Outlive Large Dog Breeds.”

Fully Vetted reader 3Dogs1Cat (great handle!) asked for more information when the research was published in the April 2013 issue of American Naturalist. Here it is.

A 70 kg Great Dane has an average lifespan of about 7 years, whereas a 4 kg Toy Poodle can expect to enjoy a lifespan of about 14 years. This well-known pattern poses a conundrum for evolutionary biologists. …

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