No two zebra are identical - each has a different pattern of stripes unique to any other, just like fingerprints.
They're the largest of the world’s three zebra species and are found only in isolated populations in Ethiopia and Northern Kenya.
Ours are on the European Endangered Species Breeding Programme, a carefully managed scheme overseeing the breeding of zoo animals in different countries. That means from time to time zebras may be moved from zoo to zoo to breed.
In 2014 we were delighted that first-time mum Nadine gave birth to baby foal Merida, the first Grevy's zebra born here in 34 years. We also had exciting news in 2016 when another new arrival joined the herd.
In the wild Grevy's Zebras live in Kenya and Ethiopia but with as few as 1,900 left they're classified as endangered. It's important for their survival to increase the population and set up conservation projects.
Zebras can run at up to 40mph and they travel large distances in the wild too.