LOS ANGELES: Hollywood star Jennifer Aniston is worrying herself sick that her only source of "unconditional love" will soon be gone after discovering that her pet dog is suffering severe health problems. The ''Friends'' star has kept a watchful eye on her 14-year-old Corgi-Terrier, Norman, who defied death in January after wandering from her California home and narrowly escaping a car collision unharmed, OK magazine reported.

The pooch is now suffering digestive problems, and Aniston is worrying that his life is at serious risk. "Norman is old and hasn''t been doing well.

She''s terrified her best friend could soon be gone." The actress also has a three-year-old white German shepherd, Dolly, and was candid about her bond with her family of pets after Norman''s scare earlier this year.

"You have to say goodbye way too soon. It''s just so sad.

It makes me so sad. But their love is unconditional and I love that," the actress said.