San Francisco’s black rhino, oldest in North America, is 45

This photo provided by the San Francisco Zoo shows Elly as the zoo celebrates the 45th birthday of the oldest black rhinoceros in North America, on Jan. 1, 2016 in San Francisco. The exact date of Elly's birth isn't known, as she was born in the wild. But she has lived at the zoo since April 1974. Elly has given birth to 14 calves, helping preserve a critically endangered species.(San Francisco Zoo via AP) This photo provided by the San Francisco Zoo shows Elly as the zoo celebrates the 45th birthday of the oldest black rhinoceros in North America, on Jan. 1, 2016 in San Francisco. The exact date of Elly's birth isn't known, as she was born in the wild. But she has lived at the zoo since April 1974. Elly has given birth to 14 calves, helping preserve a critically endangered species.(San Francisco Zoo via AP)

By Associated Press January 1, 2016 2 min read

SAN FRANCISCO (AP) – The San Francisco Zoo celebrated the 45th birthday of the oldest black rhinoceros in North America with a special cake of rolled oats and molasses.

The exact date of Elly’s birth isn’t known, as she was born in the wild. But she has lived at the zoo since April 1974.

Zookeepers on Friday prepared a “sweet feed” of oats and molasses that read “45,” said zoo spokeswoman Nancy Hayden Crowley.

Elly has given birth to 14 calves, helping preserve a critically endangered species that numbered 200,000 before 1960 throughout parts of Africa. The number has dwindled to 3,000 to 5,000, due to poaching for their horns, said zoo curator Jim Nappi.

The horns are prized in some cultures for folk medicine cures and use as decorative dagger handles.