Learning about endangered species is a great way to expand your English vocabulary while also developing awareness about wildlife conservation. This lesson introduces important animals that are critically endangered or endangered according to global conservation organizations.
You will discover lists of species, interesting facts, and useful vocabulary that describe wildlife and environmental issues. By reading about these animals and their habitats, English learners can improve reading comprehension while also learning about real environmental challenges.
Contents
What are Endangered Species?
Related link: Animal Names in English
An endangered species is a plant or animal that faces a high risk of extinction in the near future. Conservation scientists classify species using categories defined by the IUCN Red List (International Union for Conservation of Nature).
| Status | Meaning | Example |
|---|---|---|
| Critically Endangered (CR) | Extremely high risk of extinction in the wild. | Amur Leopard |
| Endangered (EN) | Very high risk of extinction in the near future. | Blue Whale |
| Near Threatened (NT) | Species that may become threatened soon. | Jaguar |
List of Endangered Species
Related links: Sea Animals Vocabulary | Wild Animals List
Below is a categorized list of endangered species for better scannability.
Marine Species (Blue Whale, Bluefin Tuna, Sea Turtles, etc.)
| Vocabulary | IPA (US) | Short Description |
|---|---|---|
| Blue Whale | /bluː weɪl/ | The largest animal ever known to live on Earth. |
| Fin Whale | /fɪn weɪl/ | A fast-swimming baleen whale found in many oceans. |
| Sei Whale | /seɪ weɪl/ | A baleen whale that feeds on small fish and plankton. |
| North Atlantic Right Whale | /nɔːrθ ətˈlæn.tɪk raɪt weɪl/ | A rare whale species historically hunted by commercial whalers. |
| Bluefin Tuna | /ˈbluː.fɪn ˈtuː.nə/ | A powerful migratory fish highly valued in seafood markets. |
| Green Turtle | /ɡriːn ˈtɝː.t̬əl/ | A large sea turtle species found in tropical oceans. |
| Hector’s Dolphin | /ˈhek.tɚz ˈdɑːl.fɪn/ | A small dolphin species found around New Zealand. |
| Irrawaddy Dolphin | /ˌɪr.əˈwɑː.di ˈdɑːl.fɪn/ | A coastal and river dolphin found in Southeast Asia. |
| Whale Shark | /weɪl ʃɑːrk/ | The largest fish species on Earth. |
| Humphead Wrasse | /ˈhʌmp.hed ræs/ | A massive coral reef fish also called the Napoleon wrasse. |
Note: In conservation lists, categories like “whale” are too broad. The IUCN evaluates each species separately (for example, Blue Whale and North Atlantic Right Whale).
Land Mammals (Asian Elephant, Red Panda, Tigers, etc.)
Explore more species in our complete list of mammals to learn additional vocabulary about land mammals and wildlife.
| Vocabulary | IPA (US) | Short Description |
|---|---|---|
| African Wild Dog | /ˈæf.rɪ.kən waɪld dɔːɡ/ | A social predator known for cooperative hunting. |
| Asian Elephant | /ˈeɪ.ʒən ˈel.ɪ.fənt/ | A large herbivore native to forests across Asia. |
| Indian Elephant | /ˈɪn.di.ən ˈel.ɪ.fənt/ | A subspecies of the Asian elephant found mainly in India. |
| Sri Lankan Elephant | /ˌsriː ˈlɑːŋ.kən ˈel.ɪ.fənt/ | A subspecies of the Asian elephant native to Sri Lanka. |
| Bornean Elephant | /ˈbɔːr.ni.ən ˈel.ɪ.fənt/ | A subspecies of the Asian elephant living on the island of Borneo. |
| Black-footed Ferret | /blæk ˈfʊ.t̬ɪd ˈfer.ɪt/ | A small carnivorous mammal once thought extinct. |
| Red Panda | /red ˈpæn.də/ | A small arboreal mammal living in Himalayan forests. |
| Galápagos Penguin | /ɡəˈlɑː.pə.ɡəs ˈpeŋ.ɡwɪn/ | A penguin species living near the equator in the Galápagos Islands. |
| Mountain Gorilla | /ˈmaʊn.tən ɡəˈrɪl.ə/ | A gorilla population living in central African mountains. |
| Tiger | /ˈtaɪ.ɡɚ/ | A large striped big cat species with several endangered subspecies. |
River Dolphins and Primates (Ganges River Dolphin, Chimpanzee, etc.)
| Vocabulary | IPA (US) | Short Description |
|---|---|---|
| Ganges River Dolphin | /ˈɡæn.dʒiːz ˈrɪv.ɚ ˈdɑːl.fɪn/ | A freshwater dolphin found in South Asian rivers. |
| Indus River Dolphin | /ˈɪn.dəs ˈrɪv.ɚ ˈdɑːl.fɪn/ | A rare river dolphin native to Pakistan. |
| Chimpanzee | /ˌtʃɪm.pænˈziː/ | One of humans’ closest living relatives. |
| Bonobo | /bəˈnoʊ.boʊ/ | A peaceful primate species closely related to chimpanzees. |
List of Critically Endangered Species
These animals are listed as Critically Endangered, meaning they face an extremely high risk of extinction in the wild. (This list includes both distinct species and specific subspecies that are under threat.)
| Vocabulary | IPA (US) | Short Description |
|---|---|---|
| Amur Leopard | /ɑːˈmʊr ˈlep.ɚd/ | The rarest leopard subspecies, native to Russia and northeastern China. |
| Black Rhino | /blæk ˈraɪ.noʊ/ | A large African rhinoceros known for its hooked upper lip. |
| Bornean Orangutan | /ˈbɔːr.ni.ən əˈræŋ.ə.tæn/ | A great ape from Borneo that plays an important role in forest ecosystems. |
| Cross River Gorilla | /krɔːs ˈrɪv.ɚ ɡəˈrɪl.ə/ | The rarest gorilla subspecies living along the Nigeria–Cameroon border. |
| Eastern Lowland Gorilla | /ˈiː.stɚn ˈloʊ.lænd ɡəˈrɪl.ə/ | The largest living gorilla subspecies found in the Congo Basin. |
| Hawksbill Turtle | /ˈhɔːks.bɪl ˈtɝː.t̬əl/ | A tropical sea turtle hunted historically for its shell. |
| Javan Rhino | /ˈdʒɑː.vən ˈraɪ.noʊ/ | One of the rarest large mammals, found only in Indonesia. |
| Saola | /ˈsaʊ.lɑː/ | An extremely rare forest-dwelling bovine discovered in Vietnam and Laos. |
| Sumatran Elephant | /suːˈmɑː.trən ˈel.ɪ.fənt/ | A subspecies of the Asian elephant native to Sumatra. |
| Sumatran Orangutan | /suːˈmɑː.trən ɔːˈræŋ.ə.tæn/ | A critically endangered great ape living only in northern Sumatra. |
| Sumatran Rhino | /suːˈmɑː.trən ˈraɪ.noʊ/ | The smallest and hairiest species of rhinoceros. |
| Sunda Tiger | /ˈsʊn.də ˈtaɪ.ɡɚ/ | A tiger subspecies native to the Sunda Islands and listed as critically endangered. |
| Vaquita | /vɑːˈkiː.t̬ə/ | The world’s rarest marine mammal found in the Gulf of California. Fewer than 10 individuals are believed to remain in the wild. |
| Western Lowland Gorilla | /ˈwes.tɚn ˈloʊ.lænd ɡəˈrɪl.ə/ | The most numerous gorilla subspecies but still critically endangered. |
| Yangtze Finless Porpoise | /ˈjɑːŋ.tsi ˈfɪn.ləs ˈpɔːr.pəs/ | A freshwater porpoise living in China’s Yangtze River. |
Top 5 Featured Critically Endangered Animals
1. Amur Leopard /əˈmʊr ˈlep.ɚd/
The Amur Leopard lives in the Russian Far East and northeastern China. Unlike most leopards in African savannas, this subspecies survives in temperate forests and snowy mountains. Scientists estimate that fewer than 100 individuals remain in the wild.
The Amur leopard can run up to 37 mph (60 km/h) and leap nearly 19 feet (5.8 meters) horizontally. These physical abilities make it a formidable hunter in its rugged habitat. Unfortunately, poaching and habitat loss remain the biggest threats to its survival.
2. Black Rhino /blæk ˈraɪ.noʊ/
The Black Rhino lives across several regions of Africa including savannas, forests, and semi-desert habitats. It is smaller than the white rhino and is known for its distinct hooked upper lip, which allows it to browse leaves from bushes and trees.
Although conservation efforts have helped populations recover slightly, the species still faces major threats from illegal wildlife trade and habitat fragmentation.
3. Bornean Orangutan /ˈbɔːr.ni.ən əˈræŋ.ə.tæn/
The Bornean Orangutan lives on the island of Borneo. Orangutans are often called “gardeners of the forest” because they spread seeds while feeding on fruits.
Although the population is over 100,000, this species is still considered critically endangered because it is declining rapidly due to deforestation, agriculture expansion, mining, and the illegal pet trade.
4. Cross River Gorilla /krɔːs ˈrɪv.ɚ ɡəˈrɪl.ə/
The Cross River Gorilla lives in mountainous forests between Nigeria and Cameroon. It is considered the rarest great ape in the world, with only a few hundred individuals remaining.
Habitat destruction and hunting are the primary causes of its decline. Poaching is taking a devastating toll on the population.
5. Eastern Lowland Gorilla /ˈiː.stɚn ˈloʊ.lænd ɡəˈrɪl.ə/
The Eastern Lowland Gorilla, also known as the Grauer’s Gorilla, lives in the rainforests of the Democratic Republic of Congo. It is the largest living gorilla subspecies.
Mining, civil conflict, and forest destruction have contributed to a major population decline since the 1990s.
