In a message dated 5/11/01 5:40:00 PM, Wimblees@AOL.COM writes: << When we come home in my car, our dogs runs tot he door, expectantly. When any other car comes in the driveway, he sounds an alarm. The dog recognizes the pitch of the engine. >> Our dog does the same thing, although I never thought of it as a pitch recognition phenomenon. It could be a squeak or some other sound that accompanies the engine, inaudible to us. Or it could be the "way" we pull into our driveways. I know I pull in at the same speed every time, same braking rate, creating a pitch envelope which might create a signature sound identifiable to the dog independent of actual pitch recognition. Then again...maybe he does have perfect pitch. Tom S.
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