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.
9. October 20, 2004
Born on October 9 to parents Bruno and Ellie, this was the first reticulated giraffe birth at Whipsnade in three years, and the seventh calf to be born at Whipsnade. Photo: Paul Gilham
10. February 3, 2009
A Siberian tiger walks in the snow after the heaviest snowfalls in the area for 20 years the previous day. Photo: MAX NASH
11. April 30, 2012
Zoo keeper Jo Shirley wears a rucksack containing Tilly, an orphaned baby wallaby, at ZSL Whipsnade Zoo. Photo: Oli Scarff
12. January 8, 2013
Jamil the four-week-old Greater One Horned Rhinoceros stands with her mother Behan. The 3ft baby rhino weighing 59kg at birth made her first public appearance on the day as keepers at the zoo undertook their annual stocktake. Photo: Dan Kitwood