Lions and tigers and bears, oh my - plus adorable red pandas, fierce sharks, silly gorillas, and many more animals await you and a friend at the Pittsburgh Zoo & PPG Aquarium! The Pittsburgh Zoo is one of only six major zoo and aquarium combinations in the United States. Located in Pittsburgh, Pennsylvania's Highland Park, the zoo sits on 77 acres of park land where it exhibits more than 4,000 animals representing 475 species, including 20 threatened or endangered species.