Bringing the most threatened species back from the brink of extinction

In the face of unprecedented biodiversity losses, effective strategies for the conservation of the world's most threatened species are urgently required.

Each potential loss is vital.

Evidence shows that timely and targeted conservation actions can help avoid species extinctions and drive much-needed recuperation. However, even once recovered, many species remain conservation-dependent, requiring support over decades.

© Claudia Gray
black rhino with starry background
© Will Burrard-Lucas

We need to focus on the species most critically in need and find the most appropriate interventions: from reintroductions to managing the spread of destructive disease. We also need to increase scientific and management capacity to achieve more than we could alone and ensure the sustainability of conservation actions.

We will achieve our vision by:
  • taking action ourselves 
  • by acting as a conservation catalyst, generating and sharing knowledge with others and empowering them to act.

We will focus on species that are Evolutionarily Distinct and Globally Endangered (EDGE) and on species classified by the International Union for the Conservation of Nature (IUCN) as Endangered, Critically Endangered or Extinct in the Wild.

Since EDGE's launch in 2007:

  • 113
    EDGE Fellows have been supported by ZSL.
  • 106
    EDGE species have been conserved and protected by our Fellows.
  • 44
    the number of countries where conservation work has taken place.
    • A close up image of a purple frog
      Protecting animals on the EDGE

      Animals on the EDGE of Existence

      Our EDGE of Existence programme is the only conservation programme in the world to focus on animals that are both Evolutionarily Distinct (ED) and Globally Endangered (GE).

       A close up of an Amur leopard and a tiger sitting down with snow covered trees in the background
      WildCats Conservation Alliance

      WildCats Conservation Alliance

      We’re working at the cutting edge, in partnership with Dreamworld Wildlife Foundation (DWF), as WildCats Conservation Alliance raising funds for conservation projects to support the recovery of these endangered species.

      Two angel sharks on the ocean floor
      Under threat from fishing and habitat degradation

      Angel Shark Conservation

      We’re working at the cutting edge of conservation to protect angel sharks and create practical routes to their recovery.

      Bengal tiger camera trap close-up face
      Working together to save iconic species

      Transboundary tigers and elephants in India and Nepal

      We have helped double Bengal populations in Nepal, and are working to continue this long journey of recovery.

      A West African elephant walks across the landscape in the WAP complex
      West African carnivores and elephants in the savannah

      West African carnivores and elephants in the savannah

      We are fighting for the future of west African elephants, in their most important stronghold, which is home to over 70% of the remaining population.

      Asiatic lion male lying down in wild at a chickpea field

      Protecting Asiatic lions in the Gir Forest

      There are approximately 600 Asiatic lions left in the Gir Forest of Western India, their last remaining natural habitat.

      A family of cheetah in Tanzania sitting together
      Cheetah conservation in Africa

      Cheetah conservation in Africa

      In the field and behind the scenes, we’re working at the cutting-edge to help overcome the threats facing endangered cheetahs in Africa and support the recovery of this Vulnerable species.