This document summarizes several endangered animal species from around the world, including some unusual characteristics. It describes the solenodon, a venomous mammal found in Cuba; the kakapo, the heaviest and rarest parrot that cannot fly; and the kiwi, a flightless bird with a highly developed sense of smell. It also mentions the hooded seal, echidna, yellow-eyed penguin, platypus, and monito del monte as endangered species, noting unique attributes like the echidna's snout and tongue or the penguin's forest nesting habitat.