'I'm touching giraffe poo': Ricky spends the day with keepers at London Zoo

What do penguin check-ups, frog X-rays and a huge birthday celebration have in common?

They're all new plans announced by London Zoo as the Zoological Society of London (ZSL) - the conservation charity behind the zoo - celebrates its 200th anniversary.

So, how did it all begin?

We sent Ricky to get stuck in to find out more.