"Cassowaries are large, flightless birds with a casque on their heads, strong legs, and sharp claws; they can be aggressive."

"Leopards are excellent climbers and often drag their prey up trees to avoid other carnivores."

"Elk are one of the largest deer species; males have large, multi-branched antlers and a distinctive bugling call."

"Wild budgerigars are mostly green; various colors have been bred in captivity; they are small and can mimic human speech."

"Kangaroos use their strong hind legs to hop and their tail for balance."

"Male capercaillies are very large with glossy black plumage and have complex courtship displays during the breeding season."

"Rattlesnakes have a rattle made of keratinous rings at the end of their tails, which they vibrate rapidly to make a warning sound when threatened."

"Alligator snapping turtles are one of the world's largest freshwater turtles, with three prominent keels on their carapaces, and a worm-like lure on their tongues to attract fish."

"Meerkats are highly social animals with 'sentinels' responsible for vigilance; famous for their upright posture."

"Larks are known for their prolonged aerial hovering and complex, melodious songs."

"Hellbenders are one of North America's largest amphibians, fully aquatic, with wrinkled skin to increase surface area for respiration."

"Tilapia are highly adaptable, grow fast, and are prolific breeders, making them important commercial aquaculture species."

"Barnacles are sessile crustaceans with calcareous shells, filtering plankton from the water by extending their cirri (feathery appendages)."

"European Starlings can form huge flying flocks called 'murmurations', which are spectacular to watch."

"Coots are black with a white frontal shield and beak, lobed toes, and are skilled at diving for aquatic plants and invertebrates."

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

"Dolphins are highly intelligent animals, capable of using tools and communicating through complex sounds."

"Catfish usually have several pairs of barbels around their mouths, resembling cat whiskers, used for sensing the environment and finding food."

"Barracudas are ferocious predatory fish, with slender bodies, sharp teeth, and fast swimming speeds."

"Dung beetles feed on animal feces, rolling it into balls and burying it as food or for a nursery."