However, one uniform calculation system may be used to guess the Pet’s age converted into human years. The Puppy’s first 12 months right after birth, equals fifteen human years, then the next calendar year equals about nine human years, and following that, annually can account for approximately 5 human years. https://jaspermbhns.blogkoo.com/pet-age-calculator-things-to-know-before-you-buy-53235876