The reality is that cats and dogs are considered «seniors» at the bright, youthful ages of 7 - or 8 - years - old. (holisticselect.com)
In the early 1980s, Esposito says, the Voyager spacecraft flew past Saturn and returned data that seemed to point toward a low ring mass — and a possible youthful age. (sciencemag.org)
The pair are candidate members of the Castor Moving Group, [16] which implies a relatively youthful age of around 200 million years. (en.wikipedia.org)