When Alex Simpson was a child, he dreamed of working as a zookeeper. Now, he works with rhinos, giraffes, hippos at the Whipsnade Zoo in the UK. He tells PEOPLE the animals can be hard to work with.

Alex Simpson is a zookeeper working with rhinos, giraffes, hippos, oh my! Alex Simpson is a zookeeper at Whipsnade Zoo, a conservation zoo located near Dunstable in Bedfordshire, England He works ...

So with 10 cheetahs you can imagine that is a lot of food," Haugen said. The zookeeper also stopped by to help feed Fiona the hippo, the animal sanctuary's most famous resident.