dog year

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English[edit]

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Noun[edit]

dog year (plural dog years)

  1. (informal) A period of time in the life of dogs, defined such that the average life expectancy of a dog in "dog years" is numerically equivalent to the average life expectancy of a human. A 4- and a 5-year-old dog are about as mature as a human of 28 to 30 years and 33 to 35 years, respectively.
    • 2004 June 15, Robert Hurwitt, “Giddy spiral down the Amazon.com workers' inferno”, San Francisco Chronicle
      90 minutes of almost nonstop hilarity is a good entertainment value. Especially if you're counting in dog years.
  2. A unit of age relative to the species being considered, defined such that an animal's age in "dog years" is the equivalent age of a dog in calendar years.

Usage notes[edit]

The two definitions complement the two definitions of "human year" respectively. By the first set of definitions, a 6-year-old dog would be described as having an age of 6 human years or 40–50 dog years. By the second set of definitions, the same dog's age would be given as 6 dog years or 40–50 human years.