IUCN Red List & Endangered Wildlife Hub

What is a lion? The lion (Panthera leo) is a large, warm-blooded mammal belonging to the Felidae family. Widely referred to as the 'King of the Jungle', the lion is a majestic big cat that plays a key role as an apex predator in its ecosystem. Unlike other cats, lions are highly social animals that live in family groups called prides. A pride typically consists of related females, their offspring, and a small coalition of male lions who protect the territory. Male lions are famous for their majestic manes, which darken as they age and serve as a sign of health and dominance.

The cheetah is the fastest land animal on Earth, built for speed and agility. Its slender, lightweight body, long legs, and flexible spine allow it to take strides of up to 7 meters. Cheetahs have distinct black 'tear marks' running from the inside corners of their eyes down to their mouth, which help deflect the blinding glare of the sun during daytime hunting. Unlike other big cats, cheetahs cannot roar, but they do purr, hiss, and make chirping sounds.

The blue whale is the largest known animal to have ever lived on Earth, even bigger than the largest dinosaurs. Despite their massive size, these gentle giants feed almost exclusively on krill—tiny shrimp-like creatures. A single adult blue whale can consume up to 4 tons of krill per day. They are baleen whales, meaning they filter ocean water through fringed plates in their mouths. Blue whales are also among the loudest animals, communicating via low-frequency groans and pulses that can travel hundreds of miles underwater.

The Giant Panda is a beloved bear species native to the mountain ranges of south-central China. Recognized worldwide for its striking black-and-white coat, the panda is a unique herbivore that feeds almost exclusively on bamboo. Despite belonging to the carnivore order, pandas have adapted to a highly specialized vegetarian diet. They are considered a national treasure in China and are a global symbol of wildlife conservation.

The ring-tailed lemur is a highly recognizable primate native only to the island of Madagascar. With its long, black-and-white banded tail and expressive yellow eyes, it has become an icon of Madagascar's unique biodiversity. Lemurs live in female-dominated social groups called troops. A recent tracking study mapped new lemur wildlife corridors through fragmented forests, discovering a previously undocumented sub-population.

The king cobra is the longest venomous snake in the world, capable of reaching lengths of up to 5.8 meters (19 feet). When threatened, it can lift up to a third of its body straight off the ground, flare its iconic hood, and emit a deep, bone-chilling growl. Despite its reputation, the king cobra is generally shy and avoids humans if possible. Its scientific name Ophiophagus means 'snake-eater', referencing its unique diet consisting almost entirely of other snakes.

The green sea turtle is one of the largest sea turtles and the only herbivorous species among them. They are named not for the color of their shells, but for the greenish color of their subdermal fat, which is stained by their diet of seagrasses and algae. Green sea turtles migrate incredibly long distances between feeding grounds and the nesting beaches where they were born. Their streamlined shells and paddle-like flippers make them exceptionally graceful swimmers.

The Komodo Dragon is the largest living species of lizard on Earth, inhabiting a few Indonesian islands. Reaching lengths of up to 3 meters (10 feet), it is a dominant apex predator in its harsh, dry island ecosystem. Armed with serrated teeth, a venomous bite, and a highly sensitive sense of smell, Komodo dragons can hunt prey as large as deer and water buffalo. They are ancient, formidable reptiles that have survived in isolation for millions of years.

The Poison Dart Frog is a group of small, brightly colored amphibians native to the tropical rainforests of Central and South America. They are famous for their extremely toxic skin secretions, which indigenous tribes have used for centuries to poison the tips of blowdarts. Their brilliant, vibrant coloration serves as an warning sign to warn predators of their toxicity. Despite their name, captive-bred poison dart frogs are entirely harmless as their toxicity is derived from their wild diet.

The axolotl, also known as the Mexican walking fish, is a unique salamander famous for its smiling appearance and remarkable regenerative abilities. Unlike most amphibians, axolotls exhibit 'neoteny', meaning they never undergo metamorphosis to become land-dwelling adults. Instead, they remain aquatic, keeping their larval features—like feathery external gills and a tail fin—throughout their entire lives. They are highly studied by scientists because they can regenerate entire limbs, spinal cords, and even parts of their hearts and brains without scarring.

The great white shark is the world's largest known predatory fish and an apex predator of the oceans. It has a powerful, torpedo-shaped body, dark gray back, and clean white underbelly, providing excellent camouflage known as countershading. Armed with up to 300 serrated, triangular teeth arranged in multiple rows, it is a formidable hunter. Great whites possess a highly developed sense of smell and special receptors called the Ampullae of Lorenzini that detect the weak electromagnetic fields generated by living creatures.

The Whale Shark is the largest fish and shark species in existence. Growing up to 12 meters (40 feet) long, these gentle giants are completely harmless to humans. They are filter feeders that consume plankton and small fish using their massive mouths. Identified by a unique pattern of white spots and stripes on their gray skin, whale sharks migrate vast distances across tropical oceans, making them a popular attraction for ecotourism divers.

The monarch butterfly is renowned for its spectacular long-distance migration. Every autumn, millions of monarchs fly up to 4,800 kilometers (3,000 miles) from North America to overwintering sites in the forests of central Mexico or coastal California. Monarchs have bright orange wings with black veins and white borders, signaling to predators that they are toxic. This toxicity comes from cardenolides in the milkweed plants they consume as caterpillars, which they retain as adults.

The Mexican Redknee Tarantula is a large, colorful arachnid native to the Pacific coast of Mexico. Recognized for its striking black body with bright orange-red bands on its leg joints, it is one of the most famous tarantula species. They are slow-moving, relatively docile ground-dwellers that hunt insects and small vertebrates. Popular in the pet trade, they are protected internationally to prevent over-collection in the wild.

What is a Bengal tiger? The Bengal tiger is a powerful big cat and the national animal of India. As the largest member of the cat family, tigers are solitary hunters known for their strength and striking orange coats with black stripes. They are apex predators that play an essential role in maintaining the balance of forest food webs.

The snow leopard, often called the 'ghost of the mountains', is a secretive big cat adapted to the cold, rugged mountain ranges of Central Asia. Equipped with thick fur and wide paws that act like snowshoes, they are solitary master climbers that navigate steep rocky slopes.

The red panda is a small, arboreal mammal native to the eastern Himalayas. With its reddish-brown fur and bushy ringed tail, it resembles a mix of a raccoon and a fox. Although named 'panda', they are not closely related to Giant Pandas, belonging to their own unique family.

The koala is an iconic Australian marsupial closely associated with eucalyptus forests. Often mistakenly called 'koala bears', they are actually marsupials that raise their young in pouches. They have adapted to feed exclusively on toxic eucalyptus leaves, sleeping up to 20 hours a day.

The polar bear is the largest land carnivore on Earth, native to the freezing regions of the Arctic Circle. Classed as marine mammals due to their reliance on sea ice, they are apex predators specialized in hunting seals. They are highly adapted to survive in extreme Arctic cold.

The hippopotamus is a massive, semi-aquatic mammal native to Sub-Saharan Africa. As the third-largest land mammal, hippos spend their days submerged in rivers and lakes to keep cool, emerging at night to graze on grass. Despite their bulky appearance, they are highly territorial and aggressive.

The giraffe is the tallest living land animal and the largest ruminant. Famous for their extremely long neck and legs, they are iconic figures of the African savanna. They feed on high tree leaves that other herbivores cannot reach, playing a key role as ecological pruning agents.

The chimpanzee is a highly intelligent great ape sharing 98% of human DNA. Native to the forests of tropical Africa, chimpanzees are famous for their complex social hierarchies, tool usage, and communication. They are active climbers that live in large, structured communities.

The Mountain Gorilla is a subspecies of the eastern gorilla inhabiting the high-altitude volcanic mountain forests of Central Africa. Living in close-knit groups led by a dominant male called a silverback, these gentle giants are herbivorous foragers. They are heavily protected in the wild.

The Bornean Orangutan is a large, shaggy great ape native to the rainforests of Borneo. Known as the largest tree-dwelling animal in the world, they are famous for their orange-red fur, long arms, and cognitive abilities. They are vital seed dispersers in forest ecosystems.

The Atlantic Puffin is a small, colorful seabird native to the cold waters of the North Atlantic. Known as the 'clown of the sea' due to its bright, parrot-like bill and expressive eyes, the puffin is a skilled diver. They spend the winter at sea and breed in large clifftop colonies in spring.

The Snowy Owl is a large, iconic owl species native to the open tundra of the Arctic. Recognizable by their white plumage and piercing yellow eyes, snowy owls are diurnal hunters that are active during the Arctic summer. They are nomadic birds that migrate south during harsh winters.

The Harpy Eagle is one of the largest and most powerful eagles in the world. Inhabiting the canopy of lowland tropical rainforests in the Americas, this formidable bird of prey is an apex predator that hunts tree-dwelling mammals like sloths and monkeys using its massive talons.

The Wandering Albatross possesses the largest wingspan of any living bird, measuring up to 3.5 meters (11.5 feet). Designed for long-distance oceanic travel, they spend months gliding over the Southern Ocean without flapping their wings, returning to land only to breed.

The Galapagos Giant Tortoise is the largest living species of tortoise and one of the longest-lived vertebrates on Earth. Inhabiting the isolated Galapagos archipelago, these gentle herbivores played a key role in Charles Darwin's formulation of the theory of evolution.

The Leatherback Sea Turtle is the largest of all living turtles and the only sea turtle that lacks a bony shell. Instead, their carapace is covered by leathery skin and oily flesh. They dive deeper and travel farther than any other turtle, feeding almost exclusively on jellyfish.

The Golden Mantella is a small, brilliantly colored frog native only to a tiny region of Madagascar. With its bright orange skin, it resembles South American Poison Dart Frogs, exhibiting a similar evolutionary path of toxicity and warning coloration to deter predators.

The Great Hammerhead Shark is the largest of all hammerhead species, reaching lengths of up to 6 meters (20 feet). Easily recognized by its hammer-shaped head (cephalofoil), this highly evolved marine predator possesses an expanded sensory field, specialized in hunting stingrays.

The Giant Oceanic Manta Ray is the largest ray species in the world, with a wingspan reaching up to 7 meters (23 feet). These gentle giants are harmless filter feeders that glide gracefully through open oceans, using cephalic fins to channel plankton into their massive mouths.

What is an African Bush Elephant? The African bush elephant (Loxodonta africana) is the largest living terrestrial land animal on Earth. Recognized by its massive fan-shaped ears, long prehensile trunk, and curved ivory tusks, this majestic mammal is an essential keystone species that reshapes savannah landscapes by knocking down trees, digging waterholes, and dispersing seeds.

The Black Rhinoceros is a solitary, armored browser distinguished from the white rhino by its pointed, hooked upper lip adapted for grasping twigs and leaves. Despite its name, its skin is slate gray. It is one of the most critically endangered large mammals on Earth.

The Sea Otter is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean. As a crucial keystone species, sea otters maintain the health of coastal kelp forest ecosystems by preying on herbivorous sea urchins. They are famous for using rocks as tools to crack open hard-shelled prey.

The Sloth Bear is a highly specialized, shaggy bear native to South Asia. Unlike other bears, it has evolved morphologically to feed primarily on social insects like termites and ants.

The Reindeer, known as Caribou in North America, is a species of deer adapted to extreme polar cold. They perform some of the longest overland migrations of any terrestrial mammal.

The Tasmanian Devil is the largest surviving carnivorous marsupial. Notorious for its screeching growls, strong jaws, and aggressive feeding frenzies, it is found in the wild only on the island state of Tasmania.

The Kiwi is a unique flightless bird endemic to New Zealand. Lacking a keel on its sternum to anchor wing muscles, it possesses hair-like feathers, vestigial wings, and a highly developed sense of smell.

The Kakapo is the world's only flightless, nocturnal parrot. With an owl-like face and a sweet, musty odor, it is one of the most critically endangered birds in the world, surviving only on highly protected islands.

The California Condor is the largest land bird in North America. Wiped out in the wild in 1987, it has been reintroduced through intensive captive breeding programs but remains highly endangered.

The Shoebill Stork is a massive, prehistoric-looking bird famous for its huge shoe-shaped bill. They are solitary ambush predators that stand completely motionless in swamps for hours.

The Marine Iguana is the only modern lizard that dives in the ocean. Evolved specifically for marine life, they graze on subaquatic algae along volcanic shores in the Galapagos.

The Hawksbill Sea Turtle is a critically endangered marine turtle. Distinguish by its hawk-like beak, they play an essential role in coral reef health by consuming toxic sea sponges.

The Goliath Frog is the largest living frog on Earth. Growing up to 32 cm in length, they are highly sensitive to river silt and inhabit clean, fast-flowing rainforest waterfalls.

The Indian Purple Frog, also known as the Pig-nosed Frog, is a highly unusual burrowing amphibian. They spend 50 weeks of the year living up to 4 meters underground, emerging for only 2 weeks to breed during monsoons.

The Emperor Newt, or Mandarin Newt, is a striking orange-black amphibian native to high mountain valleys. Their bright orange ridges serve as a warning to predators.

The Seahorse is a small marine fish famous for its horse-like head and upright swimming posture. Uniquely in the animal kingdom, seahorse males undergo pregnancy and give birth to young.

The Ocean Sunfish, or Mola Mola, is the heaviest bony fish in the world. Possessing a strange, disc-shaped body that lacks a tail, they are famous for basking sideways at the ocean surface to absorb solar heat.

The Horseshoe Crab is a marine arthropod. Regarded as a living fossil, they have existed virtually unchanged for 450 million years. Their unique copper-based blue blood is critical for medical safety testing.

Known as the 'Forest Giraffe', the Okapi is a secretive mammal native to the deep Ituri rainforest. Although it has zebra-like stripes on its legs, its closest evolutionary relative is the giraffe.

The Lar Gibbon, or White-handed Gibbon, is a small, tree-dwelling ape. They are masters of brachiation (swinging from branch to branch using arms), inhabiting the highest levels of the rainforest canopy.

Famous as the 'world's happiest animal' due to its smiling facial structure, the Quokka is a small macropod marsupial native to isolated pocket habitats in Western Australia.

Often called 'Sea Cows', Manatees are large, slow-moving aquatic mammals. They are gentle herbivores that migrate between saltwater bays and warm freshwater springs to regulate body temperature.

The Pangolin is the only mammal covered in hard keratin scales. When threatened, they roll into a tight armored ball, but they are currently the most heavily trafficked wild mammal in the world.

The Aye-aye is the world's largest nocturnal primate. An unusual lemur, it has evolved a highly specialized, elongated middle finger that it uses to tap on tree trunks to find hollow spaces and extract wood-boring grubs.

The Secretarybird is a unique bird of prey easily recognized by its long, crane-like legs and quill-like head crest. Unlike most raptors, it hunts on foot, killing venomous snakes with precise, powerful kicks.

The Rockhopper Penguin is one of the smallest crested penguins. Unlike other penguins that slide on ice, they jump across steep, slippery coastal rocks to reach nesting sites on high cliffs.

The Alligator Snapping Turtle is the largest freshwater turtle in North America. Possessing a prehistoric, spiked shell and a powerful beak, they use a unique pink worm-like lure on their tongue to capture fish.

The False Gharial is a freshwater crocodilian famous for its extremely narrow, needle-like snout. They are specialized fish-hunters that inhabit acidic peat swamps.

The Golden Poison Frog is the most toxic animal on Earth. Its skin is saturated with batrachotoxin, which prevents nerves from transmitting impulses, causing heart failure in predators.

Also known as the 'Human Fish' or 'Cave Salamander', the Olm is a blind, subterranean amphibian adapted to complete darkness. They can survive up to 10 years without eating.

Often called the 'Bearcat', the Binturong is a heavy, tree-dwelling carnivoran native to Asian rainforests. It is one of the few Old World mammals with a fully prehensile tail and is famous for smelling like hot buttered popcorn.

The Dingo is Australia's wild apex land predator. Introduced to the continent over 3,500 years ago, they play a vital ecological role in controlling invasive herbivores and meso-predators.

The Walrus is a massive Arctic pinniped famous for its long ivory tusks, stiff facial whiskers (vibrissae), and wrinkled pink-brown hide. They use their tusks to pull themselves onto ice floes.

The Kea is the world's only alpine parrot. Famous for its intense curiosity, high intelligence, and playful nature, it is known to dismantle cars, backpacks, and boots in the New Zealand mountains.

The Macaroni Penguin is the most numerous penguin species in the world, with over 18 million individuals. Named for the flamboyant yellow feather crests on their head, they nest in massive, noisy colonies.

The Gaboon Viper is a heavy-bodied venomous snake with the longest fangs (up to 5 cm / 2 inches) and highest venom yield of any snake. It possesses master leaf-litter geometric camouflage.

The Radiated Tortoise is considered one of the world's most beautiful tortoises. Its high-domed black shell is patterned with brilliant yellow starburst rays radiating from the center of each plate.

The Chinese Water Dragon is a vibrant green arboreal lizard. Inhabiting branches overhanging tropical streams, they drop into the water to swim away when threatened.

The Nurse Shark is a docile, bottom-dwelling shark. Unlike most sharks that must swim to breathe, nurse sharks pump water over their gills while resting motionless on reef floors.

The Sawfish is a giant ray equipped with a long blade-like snout (rostrum) lined with sharp teeth. They use their saw to slash through fish shoals and unearth crustaceans in mud.

The Coconut Crab is the largest land-living arthropod in the world. Equipped with massive claws capable of cracking open coconuts, they live on land and will drown if submerged in water.