Regency is used to refer to the period in Britain at the beginning of the nineteenth century, and to the style of architecture, literature, and furniture that was popular at the time. ...a huge, six-bedroomed Regency house. ...the Regency period.
I've heard an average of about 12 years. Heredity and diet can make a big difference. I had a yellow lab who died pretty suddenly at 10, but I know someone with a lab that is 18 years old. My current black lab is a rescue, so I don't know his age.
A lab will continue to grow for about a year, they don't mature until they are about 2 years old though. She will probably be a tall as she will be by the time she is 8 or 9 months old but continue to fill out for another several months. Labs are notorious for long puppyhoods.