NORFOLK, Va. (WAVY) — The Virginia Zoo has a name for its newest rhino baby: Letti! The name was inspired by Sergeant Nkateko Letti Mzimba of the Black Mambas, the first all-female anti-poaching organization in South Africa. Mzimba was named the best field ranger in Africa in 2023 for her efforts to protect rhinos and other animals.