More Aggressive People May Die Earlier

MONREAL, Quebec, May 20 (UPI) — Canadian researchers looking for keys to longevity say studies on dogs suggest shy breeds live longer than aggressive ones.

The researchers suggest dog breeding — a vast artificial selection experiment shaping not only physical characteristics and abilities but also behavioral traits such as aggressiveness/docility — can teach lessons about personality, metabolism, and life-span in general.

Researchers at the Universite de Sherbrooke, Universite du Quebec a Montreal and McGill University — led by Sherbrooke doctoral student, Vincent Careau — find docile, shy dog breeds live longer and expend less energy than bold, aggressive breeds.

The study, published in The American Naturalist, finds data on dogs published in disparate fields of study support co-related personality, metabolic and life history characteristics the researchers call “pace of life” traits.

Careau said it is logical certain traits such as energy expenditure and aggressive personality would co-exist.

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