John Unger, his 19-year-old dog, arthritis. 他19歲的狗,關節炎。

photographer Hannah Stonehouse Hudson
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Dog - Wikipedia, the free encyclopedia
 the age at which half the dogs in a population have died and half are still alive, ranges from 10 to 13 years Individual dogs may live well beyond the median of their breed.
犬 - 维基百科,自由的百科全书