Question: What stiffens and rises when an elephant feels threatened? Answer: Trunk Question: Which large animal is the only creature thought to produce its own sun tan lotion from its natural secretions? Answer: Hippopotamus Question: What is the name used for male rabbits? Answer: Bucks Question: What is another name for a mountain lion? Answer: Puma Question: Which is the largest member of the cat family? Answer: The Tiger Question: What is the collective noun for a group of hippopotamuses? Answer: A Bloat A Pod, Herd or Dale are also sometimes used.Mammals