My former boss's mom worked at the pet boarding facility until she was well into her 80's (I don't remember her exact age). It was the best job for her. She loved all of the customers- the people and their pets. She'd help walk some of the easy-to-walk dogs and she'd brush them and give them love and attention. She died last year at the age of 89.

There was a lady who'd come to the pet boarding facility and bring us all kinds of "goodies"- usually cookies or candy. Her closest family lived a few hours away, so she kind of adopted us as her family. She lived on her own until less than a year ago- she's 90! She now lives with her son (the one who lived about 3 hours away). She uses the computer to email her friends and family- I usually get an email from her everyday. She's the sweetest lady and I miss seeing her.