How many animals are alive in the world?

Vertebrate Animals

Mammals 5,490

Birds 9,998

Reptiles 9,084

Amphibians 6,433

Fishes 31,300

Total Vertebrates 62,305

Invertebrate Animals

Insects 1,000,000

Spiders and scorpions 102,248

Molluscs 85,000

Crustaceans 47,000

Corals 2,175

Others 68,827

Total Invertebrates 1,305,250