"When threatened, hedgehogs curl into a ball, protecting themselves with their sharp spines."

"Ocelots have beautiful patterned fur, resembling a smaller version of a jaguar; they are nocturnal, solitary animals and skilled climbers."

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

"The emu is one of Australia's national birds and the second-largest living bird after the ostrich."

"Weasels have slender, flexible bodies, allowing them to enter small burrows to hunt rodents; known as 'Yellow Great Immortal' in Chinese folklore."

"Herring often form huge schools and are important forage fish in marine ecosystems."

"Chamois are light-bodied and agile, skilled at leaping in rugged mountain terrain, with short, backward-curving horns."

"Sandgrouse are adapted to arid environments; male birds can absorb water in their belly feathers to carry back to their chicks in the nest."

"The Kiwi is New Zealand's national bird, flightless, with a long beak and whiskers, and nostrils at the tip of its beak."

"Common Moorhens are black with a red frontal shield and beak, large feet, and are skilled at walking on floating vegetation."

"Male narwhals typically have a single, long (2-3 meters) spiral tusk, which is a specialized left canine tooth."

"Mudskippers are amphibious fish, able to crawl and hop on land using their pectoral fins, with eyes protruding from the top of their heads."

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

"Many parrot species are known for their ability to mimic human speech and other sounds."

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

"Duck feathers are highly waterproof, thanks to oil secreted by a gland near their tail."

"Goldfish are ornamental varieties developed from crucian carp through long-term artificial selection, with diverse forms and colors."

"Seahorses are among the few animals where the male is responsible for incubating eggs; females lay eggs in the male's brood pouch."

"Monitor lizards are large predatory lizards (Komodo dragon is one type), with forked tongues like snakes and a keen sense of smell."

"Giraffes are the world's tallest mammals; newborn giraffes are about 1.8 meters tall."