We thought the National Zoo's newborn clouded leopards were cute when we got the first photo. But now there's video. Listen to them squeal! Animal care staff and veterinarians are feeding the cubs every three hours and monitoring their temperature and body weight. They've found that hand rearing clouded leopards increases the endangered species' chances of survival.
To learn more about the monumental birth, read " National Zoo Celebrates Birth of Rare Clouded Leopards."