CLEVELAND -- The Cleveland Zoo family has increased by two.

Last month, the zoo announced the arrival of two new female gorillas.

Fredrika (also known as Freddy) is a 43-year-old gorilla from Zoo Miami and Kebi Moya (also known as Kebo) is a 26-year-old from the Columbus Zoo.

They join Mokolo, who's lived at the Cleveland Zoo for years.

According to the Cleveland Zoo, Fredrika and Kebi Moya were selected to join Mokolo as part of a social experience and behavioral characteristics examination which mirrors social structure of gorillas in the wild.

Fredrika and Kebi Moya were introduced prior to their introduction to Mokolo.

Photos: