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the claim

Larger dog breeds live shorter lives than smaller breeds.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
7 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that larger dog breeds live shorter lives than smaller breeds?

Yes. Multiple peer-reviewed studies and reference sources state that smaller dog breeds tend to live longer than larger breeds, with several describing this as well-established across all breeds.

Verdict: SUPPORTED · 7 sources for, 0 against · Last checked

Evidence for · 7
Cellular metabolism and oxidative stress as a possible determinant for longevity in small breed and large breed dogs
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Cellular metabolism and oxidative stress as a possible determinant for longevity in small breed and large breed dogs. (n.d.). doi.org. https://doi.org/10.1371/journal.pone.0195832

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More for · 6
Simple English Wikipedia: Dog
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Simple English Wikipedia: Dog. (n.d.). simple.wikipedia.org. https://simple.wikipedia.org/wiki/Dog

Planet Dog
2005
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Choron, S. & Choron, H. (2005). Planet Dog. books.google.com. http://books.google.com/books?id=KuZnxSXErqUC&dq=Larger+dog+breeds+live+shorter+lives+than+smaller+breeds.&hl=&as_pt=BOOKS&source=gbs_api

Birth mass is the key to understanding the negative correlation between lifespan and body size in dogs
2016
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Birth mass is the key to understanding the negative correlation between lifespan and body size in dogs. (2016). doi.org. https://doi.org/10.18632/aging.101081

Do small dogs live longer than large dogs?
2015
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Do small dogs live longer than large dogs?. (2015). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/26436/do-small-dogs-live-longer-than-large-dogs

Genome-wide statistical evidence elucidates candidate factors of life expectancy in dogs.
2025
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WH, K., S, K., A, C., JY, C., & S, S. (2025). Genome-wide statistical evidence elucidates candidate factors of life expectancy in dogs.. doi.org. https://doi.org/10.1016/j.mocell.2024.100162

Canine and Feline Nutrition
2010
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Case, L. P., Daristotle, L., Hayek, M. G., & Raasch, M. F. (2010). Canine and Feline Nutrition. play.google.com. https://play.google.com/store/books/details?id=hd4CRyaDkKoC&source=gbs_api

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