biology

List of vulnerable amphibians

List of vulnerable amphibians is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand List of vulnerable amphibians rather than just read about it. In short: As of December 2025, the International Union for Conservation of Nature (IUCN) listed 814 vulnerable amphibian species. Of all evaluated amphibian species, 10.1% are listed as vulnerable.

Key takeaways

List of vulnerable amphibians belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect List of vulnerable amphibians to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of List of vulnerable amphibians from memory before moving on to harder problems.

Reference excerpt

As of December 2025, the International Union for Conservation of Nature (IUCN) listed 814 vulnerable amphibian species. Of all evaluated amphibian species, 10.1% are listed as vulnerable. For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild". Endangered and critically endangered species also meet the quantitative criteria of vulnerable species, and are listed separately. See: List of endangered amphibians, List of critically endangered amphibians. Vulnerable, endangered and critically endangered species are collectively referred to as threatened species by the IUCN. Additionally 896 amphibian species (11.1% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed". This is a complete list of vulnerable amphibian species evaluated by the IUCN, last substantially updated December 2021.

Caudata Salamanders

Cryptobranchidae Giant salamanders

Japanese giant salamander (Andrias japonicus) Hellbender (Cryptobranchus alleganiensis)

Hynobiidae Asiatic salamanders

Sirenidae Sirens

Reticulated siren (Siren reticulata)

Salamandridae True salamanders and newts

Ambystomatidae Mole salamanders

Proteidae Olm, waterdogs

Alabama waterdog (Necturus alabamensis) Olm (Proteus anguinus)

Plethodontidae Lungless salamanders

Anura Frogs

Leiopelmatidae New Zealand primitive frogs

Bombinatoridae Flat-headed frogs, fire-bellied toads

Pipidae Clawed frogs, Surinam toads

Volcano clawed frog (Xenopus amieti)

Pelobatidae European spadefoot toads

Megophryidae Litter frogs

Brachycephalidae Saddleback toads and allies

Telmatobiidae Water frogs

Eleutherodactylidae Robber frogs

Rhacophoridae Shrub frogs

Aromobatidae Cryptic forest frogs

Bufonidae True toads

Craugastoridae Fleshbelly frogs

Strabomantidae Cloud forest groundfrogs

Centrolenidae Glass frogs

Batrachylidae South American wood frogs

Arthroleptidae Screeching frogs

Hemiphractidae Marsupial frogs, horned treefrogs, backpack frogs, and allies

Dendrobatidae Poison dart frogs

Mantellidae Mantellid frogs

Ceratobatrachidae Wrinkled ground frogs and allies

Dicroglossidae Fork-tongued frogs

Microhylidae Narrow-mouthed frogs

Ranidae True frogs

Myobatrachidae Australian water frogs

Phrynobatrachidae Puddle frogs

Hylidae Tree frogs and allies

Pelodryadidae Australian treefrogs

Hyperoliidae African reed frogs

Pyxicephalidae Box-headed frogs

Limnodynastidae Australian ground frogs

Sphagnum frog (Philoria sphagnicola)

Cycloramphidae Button frogs and allies

Leptodactylidae Southern frogs

Hylodidae Tree toads and allies

Odontophrynidae Odontophrynid frogs

Ceratophryidae Common horned frogs

Brevicipitidae Rain frogs

Ceuthomantidae Emerald-barred frogs

Other frog species

Gymnophiona Caecilians

See also Lists of IUCN Red List vulnerable species List of least concern amphibians List of near threatened amphibians List of endangered amphibians List of critically endangered amphibians List of recently extinct amphibians List of data deficient amphibians

References

Illustrations

Worked examples

Example 1 — a first encounter with List of vulnerable amphibians

Start with the simplest possible case. Write down what List of vulnerable amphibians claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to List of vulnerable amphibians before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about List of vulnerable amphibians ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of List of vulnerable amphibians

In research: List of vulnerable amphibians appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses List of vulnerable amphibians in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: List of vulnerable amphibians is common in secondary-school and first-year university syllabi. It links to neighbouring topics IUCN Red List vulnerable species, Lists of amphibians, Lists of animals by conservation status, so understanding it makes those chapters shorter.
In everyday life: Look for List of vulnerable amphibians outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study List of vulnerable amphibians in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what List of vulnerable amphibians means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain List of vulnerable amphibians out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is List of vulnerable amphibians in simple terms?

As of December 2025, the International Union for Conservation of Nature (IUCN) listed 814 vulnerable amphibian species. Of all evaluated amphibian species, 10.1% are listed as vulnerable.

Why does List of vulnerable amphibians matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study List of vulnerable amphibians?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on List of vulnerable amphibians.