1. Elsie the Cow advertises Borden dairy products, but her cartoon husband, Elmer the Bull, is still the mascot for a brand of what?

2. What’s the most popular exercise among American adults?

3. Sportscaster Al Michaels’s famous “Do you believe in miracles?” call celebrated a 1980 U.S. win over the Soviet Union in what sport?

4. Neapolitan pizza is traditionally topped with what cheese, originally made from water buffalo milk?

5. What Walt Kelly comic strip was named for a philosophical possum living in Georgia’s Okefenokee Swamp?

What’s the "Kennection" between all five answers?