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The aging profile of dogs varies according to their adult size (often determined by their breed): smaller breeds have an average lifespan of 10–15 years, with some even exceeding 18 years in age; medium breeds typically live for 10 to 13 years; and giant dog breeds have the lowest minimum lifespan, with an overall average of 8 to 13 years ...
11 Beauceron: 14 Belgian Shepherd: 9 Bernese Mountain Dog: 11 Border Collie: 9 Bull Mastiff: 23 Cavalier King Charles Spaniel: 15 Curly Coated Retriever: 11 Dogue de Bordeaux: 22 Doberman: 9 German Shepherd Dog: 13 Golden Retriever: 16 Irish Setter: 15 Japanese Akita: 11 Labrador Retriever: 12 Mastiff: 11 Newfoundland: 21 Old English Sheep Dog ...
Some dogs are considered old at 14, while for others it’s 12 or younger
Dogs have made 11 vertebrate species extinct and are identified as a 'potential threat' to at least 188 threatened species worldwide. [162] Dogs have also been linked to the extinction of 156 animal species. [163] Dogs have been documented to have killed a few birds of the endangered species, the kagu, in New Caledonia. [164]
In 2007, a study identified a gene that was proposed to be responsible for dog size. The study found a regulatory sequence next to the gene Insulin-like growth factor 1 (IGF1), which, together with the gene and regulatory sequence, "is a major contributor to body size in all small dogs." Two variants of this gene were found in large dogs ...
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