Are you assuming the answer would be 15 or 19-year-old? Actually the answers are 38-year-old and 30-year-old for cat and dog respectively! 

The average life expectancy of our furry friends is much shorter than ours. The average life span of indoor cat is about 12 to 14 years, while for small breed dog is 12 to 15 years and for large breed dog is 9 to 12 years old. Everyone would like to enjoy a longer period of life together with their beloved pets. If you wish to do so and postpone count-down of the time with your pets, please start regulating the functions of their internal organs and vital organs to ensure a healthy body of pets.