The adder was once a common sight in large parts of the British countryside but in the last decade it has slipped into decline.
The severe decline of forest elephants in Central Africa is largely a result of the unprecedented levels of poaching for the illegal ivory trade in recent years.
The main threats to the remaining savannah elephant populations in this region are illegal poaching for ivory alongside habitat loss and fragmentation.
Amur tigers are seriously endangered in the wild - there may be as few as 540 left in the Russian Far East.
Discover threats to Asian elephants and how, at ZSL, we're working to save them
Get the lowdown on these iconic stripy-faced mammals with our surprising badger facts!
Learn more about the important bird conservation and protection work carried out by ZSL by experts around the world.
We’re working with lots of different partners to find new ways to fight poaching for the illegal wildlife trade – for example, with technology that uses sensors and cameras to detect humans and wildlife.
From clouds of Monarch butterflies flying from the trees after their winter hibernation, or 50 million sardines synchronised together and moving as one, these species are responsible for some of the most awe-inspiring moments on earth.
By working together with our conservation partners, we've managed to successfully reintroduce over 1,000 dormice
Male lions' manes are used to attract females, as well as protecting their neck and head from injuries during fights.
Northwest African Cheetahs are extinct in more than 20 countries, with fewer than 8,000 remaining in the wild.