Discover animal adaptations and unusual traits, from camouflage and temperature control to movement, senses, defense and feeding.
Reindeer eyes change color because a reflective layer behind the retina, called the tapetum lucidum, changes with the seasons. In Arctic summer, this layer reflects mostly golden light. During winter, it becomes deep blue, helping the animal detect light in the dim Arctic environment. Researchers ha
Latest guides
Articles listed here belong to this section. Use the filter to search the current page.
Reindeer eyes change color because a reflective layer behind the retina, called the tapetum lucidum, changes with the seasons. In Arctic summer, this layer reflects mostly golden light. During winter, it becomes deep blu···
Yes, lobsters can regrow lost claws. After a claw is detached, the animal seals the wound and begins developing replacement tissues. The new claw grows as a regenerating limb bud and becomes externally visible during a l···
No, hippos do not literally sweat blood. Hippopotamuses produce a special skin secretion that is initially nearly colorless but turns reddish-orange and eventually brown. Its appearance comes from two natural pigments, h···
Can spiders hear without ears? Learn how jumping spiders sense distant sounds, how spider webs act as acoustic sensors, and why vibrations matter.
Mosquitoes bite some people more than others largely because people release different combinations of skin odors that mosquitoes can detect. Research has linked greater attraction to certain carboxylic acids found in hum···
Mantis shrimp punch so hard because they use a spring-loaded striking system rather than relying on muscle contraction alone. Powerful muscles gradually store energy in elastic parts of the exoskeleton, and a latch-like ···
Wombats produce cube-shaped poop because their intestines have regions with different mechanical properties. As digested material moves through the final part of the intestine, it becomes drier and is shaped by repeated ···
Discover 10 cute snakes, from hognose snakes and sand boas to rubber boas, rosy boas and colorful corn snakes, plus what makes each species look unique.
Discover 10 colorful spiders, from rainbow peacock spiders and red ladybird spiders to green lynx spiders, Jorō spiders and bright orbweavers.
Discover real pink snakes, from rosy boas and western threadsnakes to pink-bellied worm snakes and captive snow corn snake morphs, with identification tips.
Discover 15 spectacular colorful birds, from Wilson’s bird-of-paradise and Gouldian finches to quetzals, macaws, lorikeets and peafowl.
Discover 10 dangerous sea creatures, from box jellyfish and stonefish to blue-ringed octopuses, sea snakes and sharks, and learn what makes each risky.
Discover 12 spectacular colorful frogs, from blue poison frogs and red-eyed tree frogs to golden mantellas, rainbow frogs and harlequin frogs.
What is the strongest big cat? Compare tigers, jaguars, lions and leopards by body size, bite strength, lifting ability and hunting power.
Which animal is the king of animals? The lion is the traditional answer, but tigers, orcas, polar bears and other species dominate different habitats.
What are quadruped animals? See 18 four-legged examples, learn the difference between quadrupeds and tetrapods, and understand walking, trotting and galloping gaits.
What animal has the best endurance? Compare swifts, godwits, pronghorns, sled dogs, humans, horses and more by flight, running and survival stamina.
Which animals struggle in cold weather? Discover 10 well-documented cold-sensitive animals, from manatees and sea turtles to iguanas, pythons and tropical fish.
Discover 10 birds with black feathers, including crows, ravens, black lories, palm cockatoos, blackbirds, drongos, grackles and black swans.
Discover 20 animals with tentacles, from jellyfish and squid to snails, caecilians and tentacled snakes, and learn how tentacles help them feed, sense and survive.
Meet 10 of the cutest monkeys in the world, from pygmy marmosets and tamarins to snub-nosed monkeys, with habitats, traits and conservation facts.
Discover 20 animals with claws, from jaguars and harpy eagles to moles, anteaters and iguanas. Compare claw types and how animals use them to hunt, climb and dig.
Which animals do not move? Meet 8 sessile animals including sponges, corals, barnacles, sea squirts and oysters, and learn how they feed and reproduce while attached.
Searching for gembok? The correct spelling is gemsbok. Learn Oryx gazella size, habitat, diet, horns, desert adaptations, predators and conservation status.