The life expectancy for your neutered, well cared for Tom is about 15 - 17 years. For your spayed, well cared for Queen it is about 17 - 19 years. If your kitty is ____ in human years = s/he is ____ in cat years. 6 months = 10 years 8 months = 13 years 1 year = 15 years 2 years = 24 years 3 years = 28 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 15 years = 76 years 16 years = 80 years 18 years = 88 years 20 years = 96 years 21 years = 100 years 22 years = 104 years Just like humans, kitties go through adolescence. As teenagers (in kittie years), they often rebel against their humans, breaking rules of the house and becoming more aloof than ever. Like humans, they come around again. The life expectancy for your spayed or neutered, well cared for dog depends on the breed of the dog. There is quite a variety of life expectancies among dog breeds. Dog years are simpler to figure than are cat years. On the other hand, "dog year" is not a very accurate means of measurement since each breed has its own life expectancy. A 1 year old dog is 15 in dog years. A 2 year old dog is 24 in dog years. Add four dog years for each addition year of your dog's age. So if your doggy is ____ in human years = s/he is ____ in dog years. 3 = 28 6 = 40 9 = 52 12 = 64 16 = 80 21 = 100