04/01/2008 05:12 am ET | Updated May 25, 2011

Oprah's 13-Year Old Dog Dies

Oprah Winfrey's 13-year-old Cocker Spaniel, Sophie, has passed away of kidney failure.

"Everyone here is really sad," a source at her Harpo production company told Celebrity Dog Watcher. "Sophie was truly part of the Harpo family as well as Oprah's."

In the December issue of O, Winfrey wrote about Sophie's condition, saying that she and beau Stedman Graham were "preparing for the inevitable."

The two have another Cocker Spaniel, Solomon.