How do you know the life expectancy of a particular animal?

Answer by  case (1261)

Life expectancy of any animals is going to have many factors that determine how long an animal will live. One, what kind of animal are you referring to? Second, the habitat of the animal. Without knowing some of the these factors it is difficult to say how long a particular animal will live.

Answer by  Kadie (63)

No exact rule exists to determine lifespan; the larger/slower an animal the longer life. Small/fast animals require a faster heartbeat to maintain faster metabolism; this speeds aging.