The old theory that one year in the life of the dog is equivalent to seven years in the life of a human has been abandoned. The new scale of equivalents shown below is now recognized.

DOG AGE - - - - - - - HUMAN AGE
6 months - - - - - - - - 10 years
8 months - - - - - - - - 13 years
10 months - - - - - - - 14 years
12 months - - - - - - - 15 years
18 months - - - - - - - 20 years
2 years - - - - - - - - -  24 years
4 years - - - - - - - - -  32 years
6 years - - - - - - - - -  40 years
8 years - - - - - - - - -  48 years
10 years - - - - - - - -  56 years
12 years - - - - - - - -  64 years
14 years - - - - - - - -  72 years
16 years - - - - - - - -  80 years
18 years - - - - - - - -  88 years
20 years - - - - - - - -  96 years
21 years - - - - - - - -  100 years