The zoo's official name is Bristol Zoological Gardens ('Bristol Zoo Gardens' for commercial purposes). This is not in recognition of the flower displays but recognises the first use of that title at the Regent's Park Zoological Gardens. Bristol, like its earlier London counterpart, includes several original buildings which have been praised for their architectural quirks, despite being unsuitable for the care of animals; the (former) Giraffe House joins the main entrance lodge and the south gates on Guthrie Road as a Grade II listed building. The old Monkey Temple, resembling a southern-Asian temple, is now home to an exhibit called "Smarty plants", an interactive exhibit which shows how plants use and manipulate animals to survive.
The zoo also has breeding firsts, including the first black rhino born in Britain in 1958, the first squirrel monkey born in captivity in 1953 and the first chimpanzee born in Europe in 1934.
Many of Bristol Zoo's larger animals have in the last ten years been moved to other collections. For example, there is no longer an elephant, giraffe, tiger, camel, bear or zebra. This was for the best welfare of the animals, as with many city zoos there is limited space and the zoo authorities no longer felt they could accommodate larger animals but this has not stopped the zoo from expanding and attracting visitors.
The zoo has 300 mammals in its collection, representing 50 species (from a total of over 4,300 mammal species on earth); these include a pair of asiatic lions, okapi, pygmy hippo, red panda, capybara and various primates.
The zoos Twilight Zone was the first of its kind when it opened, there are many other indoor exhibits including an insect and reptile house and aquarium meanwhile outside there are several aviaries and a seal and penguin enclosure. Ducks swim on the lakes, while the lakes islands are home to gorillas, tamarins, marmosets, gibbons and pelicans.
The Terrace is one of the oldest parts of the zoo. It is home to a pair of lions, keas, red pandas, fruit bats and flamingos as well as Twilight World which was the first such exhibit to offer the daytime visitor the chance to view the twilight behaviour of nocturnal animals. By exchanging night and day, the animals (which are awake during their 'night') can be observed during daylight hours. The lights allow a natural transition from night to day and vice versa. Twilight world is split into four zones: the Desert (sand cats, mongooses, rattlesnakes, kangaroo rats and geckos), the Rainforest (slow loris, mouse deer, sloths, owl monkeys, aye-aye, possums and mouse lemurs), the Cave (scorpions, blind cave fish and naked mole rats) and the House (rats and mice).
Outside, but still considered part of the reptile house, is a giant tortoise and green iguana enclosure where the animals have access to a heated indoor house and an outdoor enclosure.
Outside, there are aviaries for Red-tailed Amazon parrots, an enclosure for Golden lion tamarins and three linked paddocks for Tapir and Capybara.
The islands opposite Gorilla Island house a family of Squirrel monkeys, a female Agile Gibbon awaiting a male to join from either Monkey World or Twycross Zoo and also Golden-headed lion tamarins.
A Butterfly and Moth house opened at Bristol Zoo in June 2008.
The undercover walk-through is housed in a sustainably-heated, climate-controlled polytunnel.
. Species on show include the blue morpho, the glasswing, the leopard lacewing and the giant atlas moth.
The exhibit is linked to Butterfly projects run by the zoo in Kenya and Costa Rica. The zoo also supports work to protect the rare silky wave moth in Avon Gorge.
Bristol Zoo supports wildlife conservation, education and breeding programmes world-wide. For example, Bristol works with other zoos around the world to breed lemurs in captivity. Native to Madagascar, the lemurs are critically endangered because their forest habitat is being destroyed. Closer to home, the zoo has helped to reintroduce the water vole to parts of Southern England.
A number of mammals are kept on a site to the north of Bristol. There are plans to relocate many more species to the Hollywood Tower estate near Cribbs Causeway, as part of a second zoo.
The new site at Cribbs Causeway will be called the National Wildlife Conservation Park, and will include larger animals than the existing Bristol Zoo. The zoo will be split into biomes, representing species found only in specific habitats. Some of the biomes to be included are Congo Basin Tropical Forest, Central American Swamp, African Savannah, Sumatra Tropical Forest, Nepal Riverine Forest, Coral Reef, British Ancient Woodland and British Wetlands. The species list for each ecosystem has not yet been finalised, but is likely to include Manatees, Crocodiles, Bonobos, Okapi, Bongo, Sumatran tiger, Orang-utan, Giraffe, Zebra, Warthog, Kudu, African hunting dog, Rhino, Brown bear and Wolf.
Plans and information on the new site can be found inside Bug World.