Comparisons
Polar bear vs grizzly bear size: which is bigger?
Polar bears are bigger than grizzlies on average: males weigh 350–590 kg against 180–270 kg. Only the biggest coastal Alaskan…
Animal group
Mammalia
Mammals are a diverse group of warm-blooded animals known for their unique characteristics, such as having hair or fur on their bodies and producing milk to feed their young. They range from tiny creatures like mice and bats to some of the largest animals on Earth, like elephants and whales. Mammals live in various habitats, from dense forests and vast oceans to arid deserts and snowy mountain peaks. Whether it’s the playful dolphins in the sea, the majestic lions in the savannah, or the curious monkeys in the jungle, mammals play a vital role in the balance of nature. They are fascinating creatures, each with its own set of behaviors, diets, and adaptations that help them thrive in their environments.
57 animals101 articles
Comparisons
Polar bears are bigger than grizzlies on average: males weigh 350–590 kg against 180–270 kg. Only the biggest coastal Alaskan…
Anatomy & appearance
The okapi was first discovered by Europeans in 1901 when British explorer Harry Johnston came across it during his expedition…
Adaptations
A giraffe's key adaptations are its 1.8 m neck, a heart that pumps at nearly twice human blood pressure, a…
Adaptations
Stripes that look green to deer, night vision about six times better than ours, 10 cm claws and strong swimming:…
Diet & feeding
Siberian (Amur) tigers live mainly on wild boar, red deer, roe deer and sika deer, making a kill about once…
Adaptations
The 3 key adaptations of a cheetah, sorted into structural, behavioural and physiological, with a labelled diagram, myths, a quiz…
Senses
Deer see colors differently than we do, but they are able to see a wider range of colors. This is…
Conservation & population
Vaquitas drown in gillnets, mostly illegal nets set for totoaba fish. The 2025 survey saw 7 to 10 of them,…
Speed
Elephants have been timed at up to about 25 km/h (15 mph). The popular 40 km/h figure for African elephants…
Size & weight
A low rumble crosses the valley floor. A herd of bison is on the move, and each animal in it…
Speed
Hippos are often regarded as one of the most dangerous and unpredictable animals in Africa, yet it is also one…
Behaviour
Most polar bears do not hibernate; they hunt seals all winter. Only pregnant females spend winter in a snow den,…