Do routine, elective gonadectomies increase dogs’ lifespan? |
Many animal-welfare websites claim neutering prolongs the lifespan of male and female dogs. Certainly, studies have reported a consistent association between dogs being gonadectomized and longer average lifespan—several months to two years longer in females, and none to over a year longer in males. However, the methodology of these studies should be carefully assessed before accepting that the association between being gonadectomized and lifespan reflects a causal relationship.
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