Not Evaluated (NE)
Species the IUCN has not assessed. Most of the described species on Earth sit in this gap.
Alpaca
The smallest domestic camelid makes antibodies with no light chain and grows fiber much stronger than Merino wool.
Amazonian Giant Centipede
Venomous, up to 30 cm long, and its big ones are known to climb cave ceilings and catch bats.
American Cockroach
A cockroach that switches to running on four legs, and on two, at up to 50 body lengths per second.
Antarctic Icefish
A Southern Ocean fish with no working red blood cells, whose nearly clear blood carries oxygen dissolved in plasma, along with its own antifreeze.
Antlion
Its larva jerks sand out of a pit with its head and, when hungry, sucks its prey very dry.
Arizona Bark Scorpion
North America's most venomous scorpion, and the best climber among Arizona's thirty scorpion species.
Army Ant
A colony of up to a million sisters that clings together as a living nest, then raids the forest floor as a fan-shaped army.
Asian Giant Hornet
The world's largest hornet, whose raiding parties can kill thousands of honeybees in a few hours.
Asian Tiger Mosquito
A striped mosquito that rode used tyres out of South-East Asia's forests and around the world, with eggs that can wait out a winter.
Asian Weaver Ant
Arboreal architects that pull leaves together, even forming living chains, then glue them with silk squeezed from their own larvae.
Assassin Bug
The predatory bug that covers itself with the carcasses of ants, a disguise that seems to fool jumping spiders.
Atlantic Blue Crab
A paddle-legged swimmer with bright blue claws that sheds its hard shell as it grows.
Bactrian Camel
Two humps of stored fat, a shaggy winter coat, and a body that survives temperatures from minus 29°C to 49°C.
Banana Slug
A forest slug that may grow 20 cm long or more, coated in slime that numbs the mouth and tongue if swallowed.
Barreleye Fish
The deep-sea fish with a transparent, fluid-filled shield on its head and light-sensitive tubular eyes that rotate inside it.
Beadlet Anemone
A red blob on the rocks that picks fights with its neighbors using stinging blue spots.
Bed Bug
The flat, blood-drinking insect that mates by piercing the female's abdomen and can go months between meals.
Bigfin Squid
The deepest-dwelling squid on record, with elbow-bent arms trailing sticky filaments that may stretch up to 20 times its body length.
Blobfish
Nicknamed Mr Blobby by the scientists and crew of the research vessel Tangaroa after it was trawled from the Norfolk Ridge in 2003, and now held in the Australian Museum's collection.
Blue Sea Dragon
Air-bubble buoyancy, blue-and-silver countershading, and a sting borrowed from the Portuguese man o' war.
Bobbit Worm
An ambush predator up to ten feet long that buries itself in the sand with its jaws cocked like a spring trap, ready to snap a passing fish in half.
Bold Jumping Spider
A daytime stalker from a spider family whose forward-looking resolution beats every insect's, trailing a safety line of silk when it jumps.
Bombardier Beetle
Miniature artillery specialist that blasts attackers with a chemical spray up to 100°C, fired in rapid pulses.
Box Jellyfish
The translucent ocean predator with 24 eyes, no brain, and venom that can kill a person in minutes.
Conservation categories are from the IUCN Red List of Threatened Species. AnimalTracks is independent of IUCN.