Consistently ranked as one of the world's top five zoos, Omaha's Henry Doorly Zoo and Aquarium is an independent not-for-profit organization accredited by the Association of Zoos and Aquariums. As a leader in conservation, the Center for Conservation and Research focuses on areas to benefit animal husbandry and species conservation. Focus areas include conservation genetics, conservation medicine, rare plant conservation, reproductive sciences and comparative nutrition. The Zoo is recognized nationally for its conservation, animal care and exhibit design.