The Big Birthday Bash, being held from Saturday, May 2 to May 4, is being held to mark 200 years of ZSL - the charity behind Whipsnade and its sister site, London Zoo.
And to celebrate the momentous milestone, the zoo is throwing a family-friendly street party with crafts, games and a gigantic picnic.
Celebrations will be split into different party areas, with all activities taking place close to the Aquarium and Butterfly House.
There's so much to explore including the Party Animals. This performer-led zone captures the excitement of a lively birthday party with children (and the young at heart) invited to join in short, fun activities or just sitting back to enjoy the performances and soak up the atmosphere.
Zoo-robics challenges visitors to balance like a flamingo or waddle like a penguin with a lively, music-led warm-up for the birthday celebrations, with animal yoga, wild moves, and a jungle boogie.
And Animal birthday party offers high-energy party games with a zoo-themed twist, including a playful take on Simon Says, musical animal statues, and animal limbo.
There’s also The Big Zoo Quiz, including True or False, Animal Top Trumps, and Guess the Animal, plus Zoo's Got Talent - with visitors asked to do the best animal impression or make the best animal sound.
The party will also feature The Winning Zone with games for all the family and fun, fairground-inspired activities with a unique ZSL twist including Hook a Flamingo, Animal Tail Tag or Candle Crash.
The Creation Station encourages visitors to design their very own future Zoo by grabbing a modern-day outline map and using stickers and colouring pens to add in everything you'd like to see in your personalised ZSL conservation zoo, maybe even invent a new species?
The zoo will also host a Birthday Banquet with a street party-style picnic in the colourful birthday celebration space. There’ll be a Pimm’s bar, barbecue, jelly and ice cream, a chance to have your photo taken with animal mascots and a Teddy Bears' Picnic, with youngsters invited to bring their own teddy.
Party entertainment will be courtesy of The Rock Choir with performances on Saturday, May 2 at 10.50am and 12.30pm in the Birds of the World Arena.
Book tickets here.
Meanwhile, we’ve had a look in the archives to bring you these pictures from Whipsnade’s history.
1. August 10, 1933
Bella the chimpanzee from Whipsnade Zoo gets behind the wheel. (Photo by Fox Photos/Getty Images) Photo: Fox Photos
2. September 2, 1959
'Chuchi' the black-eared marmoset at the children's zoo in Whipsnade. Photo: William Vanderson
3. March 30, 2004
A two-week-old Asian elephant made her first public appearance. The unnamed calf, the first Asian elephant birth at the park, stands just 99cm high and has plenty to look up to, as mother Kaylee joins her in walks around the park. Photo: MARTYN HAYHOW
4. July 7, 1937
Eight-week-old tiger cubs belonging to Ranee, a tiger at Whipsnade Zoo, find that their keeper is very useful as a climbing post. Photo: William Vanderson