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Larger Dogs Develop More Diseases as they Age, Shortening Their Lifespans

Why do big dogs live shorter lives? It may have to do with the types of diseases larger pups develop over time.

ByElizabeth Gamillo
Credit: Eric Isselee/Shutterstock

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It is no surprise that our canine companions age faster than humans. Some studies have found that our pups are similar in age to a 30-year-old human by the time they reach their first birthday. By four, the dog is nearing human middle age at 52.

A new study suggests a dog's body size, age, and weight may influence the health ailments your pup may develop over time. The find, published today in PLOS ONE, is part of a more extensive nationwide study of how dogs age over time and its effects on their bodies.

(Credit: Erik Lam/Shutterstock)

Erik Lam/Shutterstock

Larger dogs in the study developed more health issues like cancer, bone and muscle diseases, stomach, ear, nose, and throat issues, infectious diseases, and neurological conditions. Smaller breed pups, on the other hand, developed eye issues and cardiac and respiratory diseases. However, pattern risks of these diseases varied based on ...

  • Elizabeth Gamillo

    Elizabeth Gamillo is a staff writer for Discover and Astronomy. She has written for Science magazine as their 2018 AAAS Diverse Voices in Science Journalism Intern and was a daily contributor for Smithsonian. She is a graduate student in MIT's Graduate Program in Science Writing.

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