[["A 9 year old medium sized dog would be 56 years old in human years.", 86.0], ["According to a new calculation a medium sized dog of nine years is 59 years in dog years. 15 human years equals the first year of a medium-sized dog\u2019s life. Year two for a dog equals about nine years for a human. And after that, each human year would be approximately five years for a dog.", 10.0]]
how many years in dog years is nine
animals,dogs,dog breed