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Plant Sciences, Zoology & Evolution / Re: Are any other animals like dogs, where smaller breeds outlive larger ones?
« on: 05/02/2018 00:06:15 »
Smaller horses also live longer than larger horses. The heart (although there are exceptions to the rule) is bigger in the larger animal, but is generally not proportionally bigger to the largness of the animal, and therefore has to do more work to maintain the larger body, reducing life span. (or so I have been led to believe)
Wolves can live for 30 + years in optimum environment, and their cousins the domestic dog used to live a lot longer in the past. But breeding programs have weakened the gentics of pure breed dogs both large and small, reducing previous recorded lifespan expectancies.
Wolves can live for 30 + years in optimum environment, and their cousins the domestic dog used to live a lot longer in the past. But breeding programs have weakened the gentics of pure breed dogs both large and small, reducing previous recorded lifespan expectancies.
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