She saved 13,700 senior dogs, here are her last 4.

Sherri Franklin saw old dogs going into shelters and rarely coming out, so she decided to do something about it. In 2007, she started Muttville Senior Dog Rescue in San Francisco. 27 dogs found new beginnings that year, now over 1,300 a year get a second chance. After all these years, she's passing the leash to her long time COO as the cage-free shelter carries on her legacy. Muttville.org, 750 Florida Street, open Tuesday - Sunday from 11:00 to 4:00, for senior dog cuddling.