Kijivu, a western lowland gorilla, holds her three months old baby as they rest at the Zoo in Prague, March 15, 2013. AFP PHOTO / MICHAL CIZEK.
Hasani, a six month-old Western Lowland Gorilla, yawns as he plays in the gorilla exhibit during his first public viewing at the San Francisco Zoo...
Layla, one of three new baby Western Lowland gorillas, waves a greeting from the other side of a glass partition at the Bronx Zoo's Congo Gorilla...
Kumi, one of three new baby Western Lowland gorillas, looks to the future at the Bronx Zoo's Congo Gorilla Forest exhibit.