Socks, the famous Clinton cat, passed away Friday after months of treatment for cancer.

"Socks brought much happiness to Chelsea and us over the years, and enjoyment to kids and cat lovers everywhere," Bill and Hillary Clinton said in a joint statement released by the William J. Clinton Foundation. "We're grateful for those memories, and we especially want to thank our good friend, Betty Currie, for taking such loving care of Socks for so many years."

Veterinarians say he was probably either 19 or 20 years old. RIP Socks.