Mammals Species Count by Country (Latest List 2025)

Mammals are one of the most fascinating and diverse groups of animals, ranging from tiny rodents to majestic whales. They play crucial roles in ecosystems, contributing to biodiversity and the health of habitats. Understanding mammal diversity across the globe offers valuable insights into conservation priorities and the richness of life in different regions.

This article explores the countries with the highest number of mammal species, showcasing their incredible wildlife diversity. The rankings are based on the total number of recorded mammal species, reflecting the ecological richness and varied habitats these nations possess.

Top 10 Countries with Most Mammal Species

1. Indonesia: 777
2. Brazil: 776
3. China: 710
4. Mexico: 582
5. Peru: 567
6. Colombia: 525
7. DR Congo: 508
8. United States: 444
9. Ecuador: 441
10. India: 436

Indonesia tops the list with 777 mammal species, thanks to its extensive archipelago and tropical rainforests. Iconic species like the Orangutan and Sumatran Tiger call Indonesia home, showcasing its unparalleled biodiversity. Brazil, closely following with 776 species, owes its rich mammalian diversity to the Amazon rainforest, housing species like Jaguars, Capybaras, and Sloths.

China ranks third with 710 mammal species, supported by its vast and varied landscapes, including the Himalayas and subtropical regions. Endangered species like the Giant Panda and Snow Leopard highlight its unique ecological importance. Mexico and Peru round out the top five, boasting diverse habitats ranging from deserts to rainforests. Both nations are home to numerous endemic species, including Jaguars in Mexico and Andean Bears in Peru.

Countries like Colombia, DR Congo, and Ecuador further demonstrate the connection between tropical climates and mammal diversity. The United States and India, with their large landmasses and varied ecosystems, also make the list, hosting species from Grizzly Bears to Bengal Tigers.

Full Table

The Importance of Mammal Conservation

Mammals play pivotal roles in maintaining ecological balance. As pollinators, predators, and prey, they are integral to the functioning of ecosystems. However, habitat destruction, climate change, and illegal hunting threaten mammal populations globally. Countries with rich mammal diversity must prioritize conservation efforts to protect these vital species and their habitats.

Mammals and Ecosystem Services

Mammals contribute significantly to ecosystem services, such as seed dispersal, pest control, and maintaining soil health. Protecting mammal species not only preserves biodiversity but also supports human livelihoods by sustaining healthy ecosystems.

Source

• Countries with the highest biodiversity – World Rainforests