Not even Serena Williams could yell at this ballboy

Submitter rajmahal shares this fantastic photo of Spencer, a charming and wide-mouthed rescued golden retriever whose love of tennis seems to rival even Serena Williams'. 

When Spencer's not busy performing his impressive tennis-ball tricks, he "likes to make people smile," rajmahal writes. "He's also a therapy dog for local hospitals."  If there's one thing we like better than a rescue pet, it would definitely have to be a rescue pet who's giving back to society!  We applaud Spencer (and we hope he doesn't sprain his jaw).

See more photos of rescue pets (or better yet, share your own!) at The Times' photo-sharing site, Your Scene.

-- Lindsay Barnett