Lastly, you expect a dramatically limited life span of 12 months or less in the absence of extensive medical treatment. (choicemutual.com)
One notion, the influential rate - of - living theory first advanced about 100 years ago, is that the speed of an animal's metabolism limits its life span. (discovermagazine.com)
Their massive size also limits their life span, as they usually only live to be about 10 years old. (caninejournal.com)