When people visit their local zoo, they often expect the animals to be well-cared for. The Houston Zoo is home to more than 6,000 animals, representing more 600 species, from alligators to zebras, and birds, lizards, and fish in between. So, what does it take to ensure the needs of exotic animals are met? And why is the Association of Zoos and Aquariums (AZA) considered the gold standard for zoo and aquarium accreditation?