Last modified: 20 March 2023

At ZSL we’re working tirelessly to save species on the verge of extinction. 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).

These weird and wonderful species – from the Endangered purple frog to the Critically Endangered pygmy three-toed sloth – represent a unique and irreplaceable part of our world’s biodiversity. If they were to become extinct, a whole chunk of evolutionary history would disappear with them. We can’t let that happen. 

Since 2007, ZSL’s EDGE of Existence Programme has been championing the underdog by investing in conservation at a grass-roots level. We support aspiring conservations in developing countries – EDGE Fellows – to become experts in their field and take the lead in researching and conserving species who are close to extinction. 

Support unique endangered species

We need your help. Support our conservation work and help us protect animals on the EDGE.
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