INFORMATION. Due to previous attempts of inappropriate automatic machine searches on this website, we now restrict the number of searches you can do in a period of time. The set limit should not prevent any human user from using the dictionary for legitimate purposes.
Wild Rats. In the wild, the life expectancy for a rat is much lower: 95 percent of wild rats die before they reach their first birthday. A 1-year-old rat would be around 30 years old in human terms. The most common cause of death in wild rats comes from predators, such as owls, hawks and foxes.
The life expectancy of a cat is typically 12â15 years. However, some cats may attain the age of 21 years or more.By comparison, the average life expectancy of humans in the United States at birth in 2014 was 79.56 years. A one-year-old cat is roughly comparable, in developmental terms, to a 15-year-old-human.owever, some cats may attain the age of 21 years or more. By comparison, the average life expectancy of humans in the United States at birth in 2014 was 79.56 years.