- Dolphins sleep with one eye open.

 - A dog's normal body temperature is 101.5 degrees. Thus, the term 'hot dog'!

 - The expression 'three dog night' originated with the Eskimos, who used it to refer to a night so cold; they had to bed down with three dogs to stay warm!

 - Barbara Bush's book about her English Springer Spaniel, Millie's book, was on the bestseller list for 29 weeks. Millie was the most popular "First Dog" in history.

 - All elephants walk on tip toe, because the back portion of their foot is made up of fat and no bone