This has the potential to be a real thriller of a match, as both zoos have so much of excellence in this category.
Having visited both ZSL zoos several times over the years, and Beauval just once in 2019, I am familiar with both participants, although more so with one than with the other. I feel as though ZSL has a very small edge here, and will be providing an overview to reflect this.
I will begin with what Whipsnade has to offer. Whipsnade is actually geographically arranged, with an expansive Asian zone covering the eastern half of the zoo, the largest such zone at the collection.
Whipsnade:
Passage through Asia:
A pair of massive drive-through paddocks, the first for a selection of Asian deer measures 16.6 hectares (41 acres), while the second for Bactrian Camels and a breeding herd of Przewalski's Horses is 9.7 hectares (24 acres). They are fairly simple in design, but remarkably picturesque. In particular, the first drive-through with the deer benefits from a pair of gorgeous lakes, the undulating terrain, and the very impressive size of the deer herds.
@ro6ca66 - depicting Blackbuck in the first paddock.
@ro6ca66 - depicting Fallow Deer in the first drivethrough.
@LaughingDove - overview of the first drive-through. Off the top of my head, Pére David's Deer, Sika Deer, Blackbuck, Barashinga and Fallow Deer are kept here, although there are also plenty of Chinese Water Deer, technically free-roamers with access to the whole zoo, but preferring to reside here.
Centre for Elephant Care:
@Dr. Loxodonta - the main paddock for the zoo's herd of Asian Elephants. At 1.8 hectares (4.5 acres) and with almost comprehensive grass coverage, several suspended feeders and mud wallows for enrichment, is probably one of the better enclosures for the species in Europe.
@MagpieGoose - indoors for the elephants. Thick sand substrate, a myriad of feeders and a separation area, it is again fantastic and combined with the outdoors makes for one of Europe's very best elephant complexes. Only slight weakness is the bull paddock. At 2,700 sqm (0.7 acres), it isn't too small, but isn't that big either, and has little to no grass.
Monkey Forest:
The zoo's newest exhibit, opening in March 2024. Here, Sulawesi Crested Macaques have a pair of massive enclosures featuring a genuine forest of mature trees, one of which they share with Lowland Anoa, for what is surely one of the largest and best-landscaped primate enclosures in Europe. Granted, on my sole visit since the complex opened, the macaques were a little dull, but I have heard from others that they can be lively and have even made use of the trees. There is also a very large (former Sloth Bear) enclosure for Francois' Langurs and Babirusa which is also really nicely done.
Per Google maps, the combined area of the two macaque enclosures is 7,700 sqm (1.9 acres), and the langur enclosure is 5,400 sqm (1.3 acres). The indoor portions for both species are quite large with a reasonably good amount of climbing, too.
@Dr. Loxodonta - the larger and more forested of the two macaque enclosures, this one shared with anoa I believe.
@Lafone - a portion of the langur and Babirusa enclosure.
Rhinos of Nepal:
A series of paddocks and stables for Indian Rhinoceros, which have bred at the collection in recent years. Really well-done in my eyes, with the larger and grassier paddock being a particular triumph. I am also a fan of the indoor area with its deep pools and the foliage in the visitor area giving a more modern feel, the former actually filled using rainwater collected by the building's roof.
@MagpieGoose - the largest of the Indian Rhino enclosures. The combined area of the three outdoor paddocks is 1.3 hectares (3.2 acres).
Siberian Tigers:
To avoid repeating myself, I will just quote the description that I provided in the Berlin thread, where this enclosure was also relevant.
Siberian Tiger:
Credit:
@twilighter - again shows roughly two thirds. The beautiful foliage and size of the enclosure is best appreciable here, but the small climbing apparatus has since been replaced with a far bigger one pictured below:
@Lafone - the pond appears drained here because it had just been expanded when the photo was taken, but it is filled on most days.
The tiger outdoor enclosure totals 3,600 sqm (0.9 acres).
Visayan Warty Pigs and Philippine Spotted Deer:
@MagpieGoose - by far the biggest enclosure that I have seen for warty pigs, with a great variety of substrates too. The main paddock measures 2,200 sqm (0.5 acres), but there is also a small separation paddock.
Indian Gaur:
@twilighter - while the future of this species at Whipsnade is uncertain, that doesn't take away from the ability to enjoy the very impressive cows in this huge, 8,600 sqm (2.1 acres) field.
Free-roamers:
Chinese Water Deer and Reeve's Muntjac are entitled to roam the entire 200 hectare zoo as they please!
Aquarium:
@MagpieGoose - moving away from large mammals, the Vietnamese Stream paludarium, the first seen upon entering the Aquarium, would count as well. There are Red-cheeked Goby and Spotted Hillstream Loach within the tank itself, while a pair of Chinese Crocodile Lizards roam the branches above for a very lively and enjoyable display.
Butterfly House:
@MagpieGoose - a small portion of one of the largest and liveliest such displays in Europe. Not sure how many (if any, but I am sure there are some) of the butterflies are Asian, but the free-ranging Crested Wood Partridges certainly are, and the Spiny Hill Turtles that inhabit an open-topped terrarium in the corner should be as well.
@Kalaw - very densely vegetated Spiny Hill Turtle enclosure.
Also, not entirely certain, but would the Wolverine, Northern Lynx and European Brown Bears count, as their range, I believe, extends east of the Ural Mountains and therefore into what is regarded as the 'Asian' half of Russia? If so, then all of these, especially the highly regarded bear enclosure with its immense historical significance, could prove quite influential in the tie, but I will wait to hear confirmation before providing any sort of information about them.
That aside, I have just about covered everything Whipsnade has to offer, with a few exceptions. There is quite a bit more of the extensive hoofstock selection, again in delightful paddocks, a few aviaries in Owl Wood, and unfortunately, a fair few wing-clipped birds in open-topped aviaries, although off the top of my head I believe the majority of these should not count for this category.
Will begin work on a similar such overview for London shortly. Looking forward to seeing if any Beauval voters can provide something similar as this has the potential to be a really exciting match.