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Small Dogs Tend to Live Longer Than Big Dogs. Scientists Say They Might Finally Know Why—and It Goes to the Molecular Level
Culture & Education
Smithsonian MagazineEN
October 16, 2026

Small Dogs Tend to Live Longer Than Big Dogs. Scientists Say They Might Finally Know Why—and It Goes to the Molecular Level

Larger breeds like Great Danes seem to accumulate changes to chemical tags on their DNA more quickly than tinier breeds, such as chihuahuas. These alterations allow potentially harmful 'jumping genes' to move around their genomes

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Curated from Smithsonian Magazine. Classified as Culture & Education by AI, which sometimes makes mistakes.

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