Amazing Amphibians often overlooked in animal collections

An Army of Whites tree frogs (AKA Dumpy Tree frogs) often maintained as cockroach control in some zoological centres (Many genetic Alleles now in private hands).

When visitors walk through a modern zoo, they usually head straight for the big cats, the elephants, or the primate house. The reptile and amphibian building is often a quieter corner, and within that space, the amphibians themselves can be the most overlooked residents of all. Yet these remarkable animals are among the most threatened vertebrates on the planet, and a growing number of UK zoos are demonstrating why they deserve a much brighter spotlight. From large public displays to purpose-built off-show breeding centres, amphibian collections are proving their worth in conservation, education, and operational diversity.

Vibrant True Madagascan tomato frog is a very vibrant species now protected in wild populations

The Global Crisis Facing Amphibians

Amphibians are in serious trouble. Since 1980, 122 species have gone extinct globally, a rate that far exceeds the natural background extinction level. Habitat loss, climate change, infectious diseases such as chytridiomycosis, and pollution are all taking a heavy toll. For many species, the wild is no longer a safe place. Zoos and other captive collections have become an essential safety net, providing insurance populations and a controlled environment in which to study and breed these fragile animals. Without these collections, we would lose the chance to understand and ultimately restore them to the wild.

Why Amphibians Are Often Overlooked

Perceived Challenges in Husbandry

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Glass frog - transparent species where you can see the anatomy of these frogs from a glass view.

A common reason amphibians receive less attention is the perceived difficulty of keeping them well. They require very specific environmental conditions, including precise temperature, humidity, water quality, and photoperiod. Many species are small, secretive, and nocturnal, making them less immediately charismatic than a lion or a penguin. London Zoo's new 'Secret Life of Reptiles and Amphibians' exhibit, which opened on 29 March 2024, shows just how far the industry has come. It features 11 different climate-controlled zones and more than 50 aquatic systems to cater for the needs of 16 amphibian species alongside 17 reptiles. Such investment demonstrates that with the right expertise and technology, these challenges can be overcome.

Public Perception and Visibility

The Giant Suriname Cane Toad, A neuro-toxic species, they do well in captivity and have huge appetites, the toxicology is well documented and easily manged.

Even when amphibians are housed in a zoo, they may not be on public view. Roughly two-thirds of the reptile and amphibian collection at the Wildfowl and Wetlands Trust in Slimbridge is kept off-show, for example. This is often a deliberate strategy to reduce stress, allow for breeding, and accommodate species that are too delicate for constant public traffic. Off-show collections are vital for conservation breeding, but they also mean that visitors rarely see the full extent of a zoo's amphibian work. Forward-thinking institutions are now designing exhibits that balance animal welfare with visitor engagement, so that the public can appreciate these animals without compromising their wellbeing.

Benefits of Strong Amphibian Collections

Conservation Breeding and Research

A robust amphibian collection allows zoos to act as modern-day arks. Species that are extinct or nearly extinct in the wild can be maintained in captivity, studied, and potentially reintroduced. The Chinese giant salamander, the world's largest amphibian, is one of the species housed at London Zoo's new exhibit. Holding the world's largest aquatic frog in the same collection further underlines the conservation reach of UK zoos. Research into husbandry, disease management, and reproductive biology that takes place within these collections benefits not just the individual institution but the entire global zoo community.

Marsupial tree frog, is a fascinating species with a pouch for breeding methods

Education and Engagement

Amphibians have an extraordinary capacity to fascinate people when they are given a proper platform. A well-designed vivarium allows visitors to observe cryptic behaviours such as feeding, camouflage, and metamorphosis. They also serve as powerful ambassadors for wider conservation messages about water quality, climate change, and habitat destruction. By making amphibians more visible and featuring them in keeper talks or interpretation signage, zoos can turn an overlooked group into a favourite among regular visitors.

Range of Paulariums housing a range of amphibians managed with a bioactive investment.

Enhancing Collection Diversity

A diverse collection is a healthy collection, and amphibians add a completely different dimension to a zoo's offering. The Wildfowl and Wetlands Trust at Slimbridge holds around 50 reptile and amphibian species, making its overall collection among the largest in Europe. Paignton Zoo is widely regarded as having one of the best on-show collections in the UK. Such variety enriches the visitor experience and strengthens the institution's reputation as a serious contributor to species conservation. Hertfordshire Zoo also makes a claim for notable specimens, including one of the largest green anacondas in the UK, demonstrating the breadth of herpetological expertise across the country.

Blandfords tree frog

Very attractive Bumblebee toad does well as a diurnal active toad 2-5cm

Notable UK Amphibian Exhibits

London Zoo's Secret Life of Reptiles and Amphibians

This newly refurbished exhibit opened on 29 March 2024 and houses 33 species in total, 16 of which are amphibians. The 11 climate-controlled zones and more than 50 aquatic systems are designed to meet the exacting needs of animals such as the Chinese giant salamander and the world's largest aquatic frog. It stands as a clear signal that London Zoo is placing amphibians at the heart of its modern conservation mission.

The Wildfowl and Wetlands Trust Slimbridge

Although it is best known for waterfowl, Slimbridge has quietly built the largest reptile and amphibian collection in the UK, with around 50 species. This places it among the top collections in Europe. Roughly two-thirds of this collection is maintained off-show, which allows for focused breeding and research behind the scenes. The scale and ambition of this off-show programme makes Slimbridge a key player in amphibian conservation.

Paignton Zoo and Other Collections

Paignton Zoo is considered to have one of the best on-show reptile and amphibian collections in the UK, meaning visitors can directly enjoy a wide variety of species. Hertfordshire Zoo, meanwhile, promotes its green anaconda as one of the largest in the UK, adding to the national picture of strong herpetological holdings. Each institution contributes to a network that collectively safeguards many of the world's most vulnerable amphibians.

Overcoming the Challenges of Amphibian Keeping

The barriers that once discouraged zoos from keeping amphibians are steadily being dismantled. Advances in climate control technology, life support systems, and water quality management allow even the most sensitive species to be held successfully. Training and continuing professional development for zoo staff, such as that offered by specialist consultancies, further raise the standard of care across the sector. As more zoos share their experience through BIAZA and other networks, the collective knowledge base grows, making amphibian keeping more accessible and more effective than ever before.

The robust African Bullfrog (Pyxicephalus Adsprsus) is a very impressive species and often housed to demonstrate size and resiliance as this species estivates in South/Central Africa.

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Spiney bottom tree frog developing adults.

Frequently Asked Questions

Why are amphibians important for zoo collections?

Amphibians are a vital part of global biodiversity and are among the most threatened vertebrates. Zoos provide a safe haven for species that are declining in the wild, allowing for research, breeding, and potential reintroduction. They also offer unique educational opportunities that help visitors understand the fragility of freshwater habitats and the impacts of climate change.

What makes amphibian husbandry challenging?

Amphibians require carefully controlled environments with precise temperature, humidity, and water chemistry. Many species are sensitive to stress and disease, so quarantine and biosecurity are essential. However, modern climate-controlled zones and aquatic systems, like those used at London Zoo, make it possible to manage these challenges effectively with the right expertise.

Which UK zoo has the largest amphibian collection?

The largest overall reptile and amphibian collection in the UK is at the Wildfowl and Wetlands Trust in Slimbridge, with around 50 species. This places it among the largest in Europe. For solely on-show collections, both London Zoo and Paignton Zoo are considered leaders, with London's new exhibit housing 16 amphibian species.

How can zoos encourage more visitors to appreciate amphibians?

By designing vibrant, well-planted exhibits that allow natural behaviours to be observed, and by providing interpretation that tells the story of each species' conservation status. Keeper talks, feeding demonstrations, and interactive signage can turn a quiet corner into a favourite destination. Off-show breeding programmes can also be highlighted through video links or behind-the-scenes tours where appropriate.