How long can narwhal live in captivity?

The heel of your foot is analogous to what part of the horse? Poison and non poisonous animal names? What kind of figurative speech 'you lucky dog'? Do squirrels kill chipmunks? What is zeology? Can I lay zoyzia sod on top of Bermuda grass if I mow it real short and put 2 to 3 inches of top soil on top of the Bermuda? How many bones are there in an elephant's trunk? What is a turtles defenses? How many white lions are living in zoos? Koala is to mammal as turtle is to what? How long have lions been on earth? What is the adjective in the sentence 'Two Cows are in kitchen'? How many calfs are given birth in life span of one jersey cow in one year? What is the meaning of early bird catches the worm? What kind of baby bird has yellow at the tips of its tail feathers and its wild and lives in the Albany New York area? How much work is a cat? How many ribs does a cat have? What accounts for the large number of different species of finches that Darwin observed on the Galapagos Islands? What are most lions allergic to? Is it fair to prevent them from entering the forests?