David Feldman - Imponderables

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*1. Imponderables (Sep '87, Reissued as Why Don't Cats Like to Swim?)
2. Why Do Clocks Run Clockwise? (Nov '87)
*3. When Do Fish Sleep? (Oct '89)
*4. Why Do Dogs Have Wet Noses? (Sept '90)
5. Do Penguins Have Knees? (Oct '91)
6. When Did Wild Poodles Roam the Earth? (Oct '92, Reissued as Are Lobsters Ambidextrous?)
7. How Does Aspirin Find a Headache? (Nov '93)
*8. What Are Hyenas Laughing At, Anyway? (Oct '95)
*9. How Do Astronauts Scratch an Itch? (Oct '96)
*0. Who Put the Butter in Butterfly? (Jul '03)
*10. Do Elephants Jump? (Nov '04)
*11. Why Do Pirates Love Parrots? (Sept '06)