Axolotl: Known as the Mexican walking fish, this amphibian is remarkable for its ability to regenerate entire limbs and its gilled larval state that it retains throughout its life.
Narwhal: Often called the "unicorn of the sea," this Arctic whale is known for its long, spiral tusk, which is actually an elongated tooth.
Platypus: A bizarre mammal native to Australia, it has a duck-bill, webbed feet, lays eggs, and uses electroreception to hunt.
Pangolin: This scaly mammal rolls into a ball when threatened and is known for its distinctive armor-like scales made of keratin.
Mantis Shrimp: Noted for its powerful claws that can strike with the speed of a bullet and its extraordinary vision, which can detect polarized light and see many more colors than humans.
Okapi: A relative of the giraffe, the okapi has zebra-like stripes on its legs and lives in the dense rainforests of the Congo.
Tardigrade: Also known as water bears, these microscopic animals can survive extreme conditions, including radiation, space vacuum, and high pressure.
Aye-aye: A nocturnal lemur from Madagascar with a long middle finger used for tapping on wood to find insects and then extracting them.
Saiga Antelope: Known for its distinctive bulbous nose, which helps filter dust and regulate body temperature, this antelope is critically endangered.