Cincinnati Zoo to Mate Sibling Sumatran Rhinos to Save Their Species

Scientists at the Cincinnati Zoo are planning on conserving an endangered rhino species by mating "Harapan," a six-year-old male Sumatran rhino with its nine-year-old sister "Suci". There are 100 Sumatran rhinos on the planet and just two in the U.S., which has led scientists to planning the new breeding program.