Is Australia Zoo the World's Largest?

Australia Zoo is not the largest zoo globally. Several institutions surpass it in land area, animal count, and species diversity:

• Henry Doorly Zoo (Omaha, USA): 160+ acres, 17,000+ animals, 1,000+ species.
• San Diego Zoo (USA): 100+ acres, 3,700+ animals, 650+ species.
• Columbus Zoo (Ohio, USA): 580 acres, 10,000+ animals, 575+ species.
• Singapore Zoo: 69 acres, 2,800+ animals, 300+ species.
• Bronx Zoo (NYC, USA): 265 acres, 6,000+ animals, 650+ species.

While Australia Zoo is renowned for its conservation work and wildlife presentations, these other facilities hold the size records.