Betta fish
Betta splendens
IUCN Red List category
Vulnerable
Animals the IUCN Red List classes as Vulnerable, and what is known about their numbers.
13 animals40 articles
Animals: Vulnerable
Betta fish
Betta splendens
Cheetah
Acinonyx jubatus
Giraffe
Giraffa camelopardalis
Great white shark
Carcharodon carcharias
Hippopotamus
Hippopotamus amphibius
King cobra
Ophiophagus hannah
Leatherback sea turtle
Dermochelys coriacea
Lion
Panthera leo
Polar bear
Ursus maritimus
Pygmy marmoset
Cebuella pygmaea
Snow leopard
Panthera uncia
Sulcata tortoise
Centrochelys sulcata
Walrus
Odobenus rosmarus
Articles
Behaviour
Will a lion eat another lion?
Lions kill other lions fairly often, mostly cubs after new males take over a pride, but they rarely eat them.…
Senses
How far can a lion smell?
Nobody has measured how far a lion can smell. Research shows lions mainly hunt by sight, but use smell to…
Predators & threats
What eats lions?
Nothing regularly hunts a healthy adult lion. People and other lions cause most lion deaths, while cubs are taken by…
Records & rankings
What is the biggest bear in the world?
The polar bear and the Kodiak brown bear tie as the world's biggest bears. An extinct South American bear, Arctotherium,…
Size & weight
How Big Do Sulcata Tortoises Get: A Comprehensive Guide
Have you ever heard of the Sulcata tortoise? It’s a big tortoise that lives in dry parts of Africa. Just…
Adaptations
The Great White Shark Adaptations – Behavioral, Structural & Physiological
We often fear what we don’t understand. And in the vast depths of the ocean, no creature embodies this sentiment…
Strength & bite force
How strong is a polar bear?
Polar bears are extremely strong, but their bite, swipe and lift have never been measured. Their size, paws, skull and…
Conservation & population
Grizzly polar bear hybrids: are pizzly bears real?
Grizzly polar bear hybrids are real but very rare. All eight known wild pizzlies trace back to one female polar…
Diet & feeding
What do walruses eat?
Walruses eat mostly clams and other seafloor shellfish, thousands in one feeding. They find them with their whiskers and suck…
Habitat & range
Where do polar bears live?
Polar bears live only in the Arctic, on sea ice across five countries. Canada has about 16,000 of them, Alaska…
Lifespan
How long do polar bears live?
Wild polar bears live 15 to 18 years on average, and females often reach 20 to 25. The oldest known…
Diet & feeding
What do polar bears eat?
Polar bears live mainly on ringed and bearded seals, and often eat only the fatty blubber. Fish, birds, eggs and…