Senses
Do beluga whales use echolocation?
Yes. Belugas send out high clicks through their melon and listen for echoes to find fish and breathing holes in…
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 animals100 articles
Senses
Yes. Belugas send out high clicks through their melon and listen for echoes to find fish and breathing holes in…
Anatomy & appearance
Rhino horns grow back because they are made of keratin and grow from the skin, not the skull. Measured regrowth,…
Predators & threats
Coyotes are intelligent animals, and they are known for their adaptability and survival skills. Despite being skilled hunters and adaptable…
Size & weight
Adult belugas average about 1,430 kg (3,150 lb), and big males reach about 1,900 kg. Calves weigh 41–59 kg at…
Predators & threats
Only killer whales are known to hunt blue whales; the first confirmed kills were off Australia in 2019 and 2021.…
Records & rankings
The polar bear and the Kodiak brown bear tie as the world's biggest bears. An extinct South American bear, Arctotherium,…
Anatomy & appearance
Adult belugas are pure white, 2.6–4.5 m long, with a round, flexible forehead, no dorsal fin and a neck that…
Predators & threats
Killer whales are the only regular predators of humpback whales, and they go after calves. Sharks almost never kill a…
Diet & feeding
Elephant seals are marine animals that are found on the coasts of both the northern and southern hemispheres. Seals are…
Strength & bite force
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 real but very rare. All eight known wild pizzlies trace back to one female polar…
Adaptations
Wolves are a remarkable species that have evolved a range of adaptations to help them survive and thrive in their…