Nashville Zoo & Smithsonian Make History With Birth of Clouded Leopard
Nashville Zoo and the Smithsonian’s National Zoo and Conservation Biology Institute are pleased to announce the birth of a male clouded leopard on March 1, 2017 from an artificial insemination (AI) procedure using frozen/thawed semen. This accomplishment is a first for this species and a giant step for global conservation efforts.
“This is an enormous accomplishment for both Nashville Zoo and the team at the Smithsonian,” said Dr. Heather Robertson, Director of Veterinary Services at the Zoo. “It means we can collect and preserve semen from clouded leopard populations around the globe and improve pregnancy outcomes from AI procedures in this species.”
Dr. Robertson and Nashville Zoo Associate Veterinarian Dr. Margarita Woc Colburn used hormones to induce ovulation in a female named Tula who was born and raised at Nashville Zoo. The Smithsonian’s research staff, Adrienne Crosier, Ph.D., Pierre Comizzoli, D.V.M., Ph.D., and Diana Koester, Ph.D, collected semen a week earlier from a male named Hannibal at Smithsonian’s National Zoo. The team used a new technique depositing a very small volume of semen into the oviduct where the eggs normally rest after ovulation.
After birth, the cub was removed for examination and will be hand-raised by keepers to ensure survival and well-being. This process also lowers animal stress for future hands-on care. The cub will stay at Nashville Zoo with plans to eventually introduce him to a potential mate.
Nashville Zoo and the Smithsonian’s National Zoo and Conservation Biology Institute have a long history of working together on clouded leopard conservation. Since 2000, they have collaborated with Point Defiance Zoo and Thailand’s Zoological Park Organization to form the Clouded Leopard Consortium and develop breeding programs as well as field monitoring projects for clouded leopards in Thailand. Because the captive clouded leopard population is not self-sustaining, it necessitates the need for intensive reproductive management techniques to maintaining captive populations not only in the U.S. but also throughout the world.
“This cub, the first clouded leopard offspring produced with cryopreserved semen, is a symbol of how zoos and scientists can come together to make positive change for animals and preserving global biodiversity,” said Dr. Crosier. “Collaboration is the key to conservation of clouded leopards, along with so many other rare and endangered species we care for and study.”
The first successful clouded leopard AI was performed at Nashville Zoo in 1992 by Smithsonian scientist JoGayle Howard and Nashville Zoo President Rick Schwartz. In 2015, Dr. Comizzoli contributed to a successful birth using cooled semen and the new AI technique at the Khao Khew Open Zoo in Thailand.
Clouded leopards are among the rarest of the world’s cat species and one of the most secretive. Due to limited knowledge of this species, they have proved difficult to breed in captivity. They are sensitive to auditory and visual disturbances, increasing the stress levels during captive breeding programs – leading facilities, such as Nashville Zoo, to work with artificial insemination specialists to increase the size and diversity of the captive bred population.
About Nashville Zoo
Nashville Zoo is a nonprofit organization and an accredited member of the Association of Zoos and Aquariums, assuring the highest standards of animal care and husbandry. The Zoo is actively engaged in conservation research, habitat protection, breeding programs and education initiatives around the globe as well as in our own backyard. Celebrating 20 years at Grassmere, the Zoo attracts more than 890,000 visitors annually and is considered one of the top attractions in Nashville. Nashville Zoo is located at 3777 Nolensville Pike and is open every day except Thanksgiving, Christmas and New Year’s Day. For more information about Nashville Zoo, visit www.nashvillezoo.org.