Rebecca Cliffe

Board Secretary. Rebecca Cliffe is a British zoologist, one of the world’s leading authorities in sloths, and the founder and executive director of the Sloth Conservation Foundation.

While living in the Costa Rican rainforest for many years, she spearheaded the longest recorded study into wild sloth ecology for her PhD and has since expanded her work to encompass many different aspects of sloth biology, physiology, and conservation genetics. Although her areas of research are broad, Rebecca’s work has always been focused on one central goal: helping sloths – whether through  improving rehabilitation programs or tackling the problems sloths are facing in the wild.

Her scientific work has been featured in a range of distinguished journals, as well as media outlets including the BBC, Discovery Channel, National Geographic, Animal Planet, Ranger RickThe Independent, and Scientific American. With her wealth of experience from living with and observing sloths in their natural habitat, Rebecca has gained an unparalleled knowledge of the little-known habits of these mysterious mammals.

For more information about Rebecca’s work saving sloths visit