Why large dogs age faster than smaller breeds: DNA study
A new study links faster molecular ageing in large dogs to DNA changes, offering clues to shorter lifespans and the possibility of healthier ageing.
Few animals show the link between size and lifespan as clearly as dogs. Within this one species, large breeds such as Great Danes typically die younger than small ones such as Chihuahuas. A new study indicates the reason may lie in how DNA changes wi... [4423 chars]
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- Thursday, 15 October 2026, 5:48 am IST
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