A very special horse celebrated his 16th birthday over the weekend.Many of you know Hank the Horse, the driving force of the "For Hank's Sake" non-profit.Hank often visits students at school, and he's even raised thousands of dollars ringing the bell for the Salvation Army.Hank celebrated his sweet 16 Sunday with a special party at Golden's Pub in Georgetown, which included a meet and greet with supporters and his own birthday cake. The founder of "For Hank's Sake," Tammi Regan, looked back on their time together so far."Giving back has always been a core value in my life as a child, growing up, and now I have the power of horses to help me help others," said Regan. "It reminds me of my compassion all day long, every day. It's a wonderful feeling to be able to help horses and help others."If you'd like to learn what Hank will be doing next, you can visit his website at forhankssake.org