A big pup may age a lot more slowly but surely at the outset, but be nearing Center age at five. Small and toy breeds Really don't come to be "seniors" right up until close to age ten. Medium-size pooches are somewhere in the center on the two counts. Genetics. https://felixnuzdh.p2blogs.com/32575790/the-best-side-of-dog-years-to-human-years-formula