1. San Diego Zoo – San Diego, USA

• Highlights: One of the most famous zoos globally, known for naturalistic enclosures, endangered species conservation, and the first breeding programs for rare animals.

• Specialties: Giant pandas (until 2019), polar bears, and rare species from all continents.

2. Singapore Zoo – Singapore

• Highlights: Known for open-concept enclosures, where animals are separated from visitors by moats and barriers rather than cages.

• Specialties: Night Safari, which allows guests to see nocturnal animals in naturalistic habitats.

3. Loro Parque – Tenerife, Canary Islands, Spain

• Highlights: Started as a parrot sanctuary and has grown into one of the largest zoos in Europe.

• Specialties: Extensive collection of parrots and a significant conservation focus, with penguins, killer whales, and chimpanzees.

4. Chester Zoo – Cheshire, England

• Highlights: Home to over 20,000 animals and over 500 species, known for advanced veterinary care and conservation efforts.

• Specialties: Rare species like the Sumatran tiger and Asian elephants, plus unique habitats like Islands at Chester Zoo.

5. Berlin Zoological Garden – Berlin, Germany

• Highlights: One of the oldest and most extensive zoos in Europe, founded in 1844.

• Specialties: Houses the most species of any zoo, including pandas, hippos, and various large mammals.

6. Taronga Zoo – Sydney, Australia

• Highlights: Known for stunning views of Sydney Harbour and emphasis on Australian wildlife and global conservation.

• Specialties: Australian native species like kangaroos and koalas, as well as global animals like tigers and elephants.

7. Bronx Zoo – New York City, USA

• Highlights: Known for its large, immersive habitats and emphasis on educating the public about wildlife conservation.

• Specialties: Congo Gorilla Forest, with gorillas in a rainforest-like setting, and its historic Wild Asia Monorail.

8. Vienna Zoo (Tiergarten Schönbrunn) – Vienna, Austria

• Highlights: The world’s oldest zoo, founded in 1752, located on the grounds of Schönbrunn Palace.

• Specialties: Pandas, elephants, and historic buildings with modern animal care facilities.

9. Henry Doorly Zoo – Omaha, USA

• Highlights: Known for immersive exhibits and conservation work, especially for endangered species.

• Specialties: Desert Dome (world's largest indoor desert), Lied Jungle (one of the largest indoor rainforests).

10. Beauval Zoo – Saint-Aignan, France

• Highlights: Renowned for its unique collection of animals and immersive enclosures.

• Specialties: Giant pandas, white tigers, and one of the most diverse collections of animal species in Europe.