"Lemmings are known for their periodic population explosions and large-scale migrations (sometimes leading to mass deaths)."

"Swans are often seen as symbols of fidelity, with many species forming lifelong pair bonds."

"Many cuckoo species exhibit brood parasitism, laying their eggs in the nests of other birds, with the host parents raising the young."

"Unlike bees, most wasps can sting repeatedly; some species are social, while others are solitary."

"Scorpions are nocturnal predators; the stinger on their tail is used for predation and self-defense; some species glow under UV light."

"Many salamander species have remarkable regenerative abilities, capable of regrowing lost limbs and even parts of organs."

"Male grasshoppers produce sound by rubbing their hind legs against their wings to attract females or declare territory."

"Silkworm larvae spin cocoons from silk, which is an important textile raw material; adult moths have lost the ability to fly."

"Koalas eat almost exclusively eucalyptus leaves, which are toxic and low in nutrients for most animals."

"Lionfish have venomous fin spines, are brightly colored with exaggerated forms, are popular ornamental fish, and also an invasive species."

"Albatrosses are among the birds with the largest wingspans, skilled at dynamic soaring for long periods."

"Stick insects resemble twigs or leaves, are representative insects of mimicry, and are herbivorous."

"Mongooses are known for their ability to prey on venomous snakes, are agile, and have resistance to some snake venoms."

"The platypus is one of the few egg-laying mammals; males have venomous spurs on their hind feet."

"Pigeons have excellent navigation skills, able to use the Earth's magnetic field and the sun for direction."

"Clownfish form a symbiotic relationship with sea anemones, are immune to their stings, and can evade predators."

"Tapirs have a proboscis-like snout and nose used for grasping food; they are ancient mammals."

"Swallows are known for their graceful flight and habit of building mud nests on human structures."

"Wrens are tiny birds, often holding their tails cocked up, with loud, complex songs, and are very energetic."

"Seals have a thick layer of fat (blubber) to keep warm in cold water."