DALLAS - The world's oldest living gorilla in captivity celebrated her 55th birthday Thursday with a four-layer frozen fruit cake and banana leaf wrapped treats at her wooded home in the Dallas Zoo.

"Jenny's" caretakers say she's having a few joint issues and her eyesight isn't what it used to be but she still looks good for an old ape.

The International Species Information System maintains records on animals at 700 institutions around the world.

Gorillas in the wild normally would live to age 30 or 35.

Of the roughly 360 gorillas in North American zoos, only four are over the age of 50. All of them are female.