Animals on the EDGE

Purple frog

ZSL's EDGE of Existence programme highlights and protects some of the most unique species on the planet, which are on the verge of extinction.

These weird and wonderful species are Evolutionarily Distinct and Globally Endangered. Representing a unique and irreplaceable part of our world’s biodiversity, many EDGE species have been overlooked by conservationists – until now.

Explore our conservation work around the world, from Fellows to Projects to Expeditions, to learn more about these amazing species and support our efforts to maintain the diversity of life.

Observation in Quadrat

Training aspiring conservationists in developing countries to research and...

Elephants, rhinos and pandas are well-known EDGE mammals, but 70% of the highest
Philippine eagle

The ‘little dodo’ and a bird that dispatches its prey by stamping on its...

85% of the top 100 EDGE amphibians are currently receiving little or no conserva
EDGE coral reefs highlights 10 priority species for conservation that reflect th
Pygmy Hippo caught in camera trap

The pygmy hippopotamus, or pygmy hippo, Choeropsis liberiensis, is an...

Temminck’s ground pangolin. Picture: Scott and Judy Hurd

Pangolins are now thought to be the world’s most illegally trafficked wild...

White-bellied pangolin (c) Tim Wacher, ZSL

ZSL is training a team of conservation leaders to address increasing threats...

Chinese Giant Salamander

ZSL’s EDGE of Existence Programme has been working to protect this unique...

Black Rhinoceros

ZSL is working with Social Finance, the United Nations Development Programme...

Pygmy sloth climbing

The unique and critically endangered pygmy sloth is the world’s slowest...

Long-eared jerboa

Surveying the diverse and unique wildlife of this region and building up a...

Asian elephant in Salakpra Wildlife Sanctuary

ZSL is working in Thailand to conserve iconic species including Asian...