From aardvarks to zebras, Chester Zoo boasts a huge range of interesting animals, quirky facts and impressive statistics.
But how does the rest of the alphabet fare?
Here's an A-Z of the hugely popular attraction so you can get to know it a little better.
A is for award-winning
The zoo collects awards like its meerkats win adoring fans.
Chester Zoo animal experts picked up four gold awards and one silver at the British and Irish Association of Zoos and Aquariums’ 50th Anniversary Awards last month and the attraction - which is the most visited paid-for one outside London - was highly commended at the 2016 VisitEngland Awards for Excellence.
B is for baby animals born at the zoo in 2016
There has been no shortage of the pitter-patter of tiny feet so far this year, with arrivals including a quartet of capybara pups, adorably fluffy flamingo chicks, a baby black rhino called Gabe, a cute Sulawesi crested macaque and a rare anoa calf.
C is for conservation
Aside from being a brilliant day out, Chester Zoo is a global conservation charity using its expertise across the UK and in more than 30 countries around the world.
It has 10 major field programmes, working on a variety of species and habitats worldwide in order to achieve its mission to help save species threatened with extinction.
D is for dinosaurs
Popular exhibition 'Dinsosaurs! The Next Adventure' is on until September 4.
Visitors can expect an ‘exhilarating’ journey back to the Jurassic age when the gigantic creatures roamed and ruled the earth, where you’ll be able to walk among the predators and their prey, ‘not knowing what’s lurking around the corner’.
E is for encounters
If you've ever wanted to get up close and personal with an aardvark, giraffe or fruit bat then you're in luck! Chester Zoo offers visitors the chance to go behind the scenes and meet their favourite animals through special encounters, or even the opportunity to be a zookeeper for a day!
F is for famous faces
The zoo has welcomed its fair share of celebrities and well-known figures over the years.
Names include David Attenborough, Liz Hurley, Princess Diana, Brian Blessed, Bill Oddie, Russell Watson, the Queen and Duke of Edinburgh, and former Prime Minister David Cameron, who paid a visit on the final day of campaigning before last year's general election.
G is for George Mottershead
The man who dreamed of the world's first zoo without bars and made it a reality in 1931, the Chester Zoo founder preferred to use moats and ditches as an alternative to Victorian iron cages.
Mottershead was appointed an Officer of the Order of the British Empire (OBE) in the 1973 New Year's Honours List and served as president of the International Union of Directors of Zoological Gardens (now the World Association of Zoos and Aquariums).
H is for the Harry Potter characters who have lent their names to three tiny warthog piglets
Hedwig, Nagini and Aragog took their first tentative steps outside earlier this month, after their birth on June 9 following a six-month pregnancy.
The trio of two girls and one boy were named in tribute to some of the animals who feature in the much-loved book series.
I is for Islands
The UK's biggest ever zoo development, Islands opened in July 2015.
Visitors can head off on their own expeditions, walking over bridges, travelling in boats and seeing buildings that are architecturally identical to those found on the far-flung islands of Panay, Papua, Bali, Sumba, Sumatra and Sulawesi.
The £40m attraction showcases some of the vital conservation work that Chester Zoo does in South East Asia.
J is for jaguar enclosure
Spirit of the Jaguar transports visitors to South America, which has one of the most exotic and biodiverse habitats in the world.
It's home to bush dogs, two-toed sloths, Amazonian turtles and of course jaguars.
A cinema, set inside a cattle ranch, highlights the zoo's conservation work in Brazil.
K is for Komodo dragons
2014 saw the arrival of four Komodo dragons - the world's largest species of lizard.
Jantan and Ora moved from Prague Zoo and were joined a few months later by three females from Colchester Zoo.
Chester Zoo made headlines around the world in 2007, when Flora – a Komodo dragon who lived there then – reproduced despite never having had a mate in a process called parthenogenesis; it was the first time this had ever been witnessed in the species.
L is for Lazy River Boat Trip
Zoo-goers adventuring around Islands have the option to discover the exhibit from a different perspective on the Lazy River Boat Trip.
Each of the 14 boats is individually themed around a different South East Asian island.
M is for monorail
If it's good enough for Her Majesty the Queen - who took a ride on the famous monorail when she visited in 2012 as part of her Jubilee tour of the UK - then it's good enough for us.
Carriages give riders great views of the animals, habitats and gardens, along with a recorded commentary to guide you around.
N is for nosh
There are plenty of places to get grub at Chester Zoo, from Manado Street Kitchen's South East Asian inspired menu to Bembe Coffee Shop, where you can see the elephants and rhinos through the window without even having to purchase a ticket to the zoo due to its location in the Diamond Jubilee Quarter.
O is for Our Zoo
The critically acclaimed BBC drama chronicled the Mottershead family's foundation of Chester Zoo.
Thousands of fans were disappointed when the BBC confirmed it would not be commissioning a second series, despite pulling in more than five million viewers per episode and being nominated for two National TV Awards.
P is for philanthropic staff
Chester Zoo staff are fast earning themselves a reputation as knights in practical blue polo shirts, coming to the rescue of visitors facing mechanical mishaps.
Guest experience assistant Paul Weaver's good deed of inflating a visitor's flat tyre completely unprompted went viral last October, while his colleague Paul Burnett won praise for a similarly heartwarming gesture last month.
Q is for Quaver
Humboldt penguin Quaver and his siblings Wotsit, Cheeto and Frazzle made their entrance into the world as fuzzy chicks in April.
Named after their keepers’ favourite crisps, these youngsters' species is listed as vulnerable to extinction on the International Union for the Conservation of Nature’s Red List of Threatened Species.
R is for Realm of the Red Ape
Realm of the Red Ape is an Indonesian forest themed exhibit which houses threatened Sumatran and Bornean orangutans, as well as lar gibbons.
Visitors are immersed in the world of the forest canopy and its teeming biodiversity.
S is for species
A whopping 20,000 animals from 500 different species call the zoo home.
About half those species are on the threatened list.
T is for The Secret Life of the Zoo
This heartwarming Channel 4 series revealed what it takes to keep the zoo's thousands of animals fed, watered and happy.
It proved such a ratings hit - averaging 2.7 million viewers - that it has been renewed for a second series which is expected to air later this year.
Documentary-makers used a range of filming techniques to capture the animals’ behaviour in intimate detail.
U is for Upton
The large suburb of Upton has proudly lent its surroundings to Chester Zoo since the 1930s.
George Mottershead bought Oakfield House and seven adjoining acres of Upton land for £3,500 and the zoo has grown and grown ever since, with the site now boasting 125 acres.
V is for visitors
We're talking big numbers here. Around 1.6million of them pass through the gates every year.
W is for wedding venue
Stunning Victorian mansion Oakfield Manor, which stands in the heart of the zoo, can be booked as a wedding venue.
Newlyweds are able to get exclusive use of the house for both the ceremony and reception, and all proceeds from the wedding go towards helping to look after animals - what's better than that?
X is for x-ray tetra fish
Normally found in the Amazon and Orinoco basins, Chester Zoo has saved fish fans some air-miles by including them in its big Amazonian tank in the Spirit of the Jaguar exhibit.
They have highly transparent bodies, hence their nickname.
Y is for YouTube
The zoo has its own YouTube channel where you can keep up to date with latest news and watch how the animals are getting on from afar.
Videos include penguins hatching, TV adverts from years gone by and many births.
Z is for zoological gardens
Chester Zoo isn't just about animals - it's also home to award-winning gardens which reflect the team's passion for plants.
Its award-winning gardens are all part of Cheshire's Gardens of Distinction and carefully maintained by the Horticulture and Botany team.