Conservation & population
Why is Leatherback Sea Turtle Endangered?
The leatherback sea turtle is the largest of all turtles and is one of the most endangered. They are found…
IUCN Red List category
Vulnerable
Animals the IUCN Red List classes as Vulnerable, and what is known about their numbers.
13 animals43 articles
Articles
Speed
How Fast can a Hippo Run – Hippo Speed
Hippos are often regarded as one of the most dangerous and unpredictable animals in Africa, yet it is also one…
Behaviour
Do polar bears hibernate?
Most polar bears do not hibernate; they hunt seals all winter. Only pregnant females spend winter in a snow den,…
Comparisons
Tiger vs lion: who would win?
Wild tigers and lions never meet, so nobody really knows who would win. On paper the tiger is heavier on…
Comparisons
How Big is a Great White Shark – Great White Shark Size Comparison
The great white shark is a species of large mackerel shark that is found in the coastal surface waters of…
Strength & bite force
How strong is a lion? Bite force, paw strike and what is really measured
A captive lioness bit a sensor with 1,594 newtons, about 163 kg of force. No one has ever measured a…
Diet & feeding
What do King Cobras Eat- King Cobra Diet
The King Cobra is a species of venomous snake that is found in the forests of India, in fact all…
Conservation & population
How many giraffes are there in the world?
About 140,000 giraffes live wild in Africa, according to the Giraffe Conservation Foundation's 2025 count. The IUCN lists the giraffe…
Records & rankings
How tall is a giraffe? Height, length and weight
Adult male giraffes grow up to 5.5 m (18 ft) tall and females up to 4.3 m (14 ft). A…
Speed
How fast can a polar bear swim?
Polar bears can swim at about 10 km/h (6 mph), but they are built for distance, not speed. One tracked…
Records & rankings
How big is a polar bear? Height, length and weight
Adult male polar bears usually weigh 350–600 kg and stand about 3 m tall on their hind legs; females weigh…
Adaptations
What color skin do polar bears have?
Under their fur, polar bears have black skin. The fur itself is clear and only looks white because it scatters…