I was impressed while listening to the CD, "The Latin Side Of Vince Guaraldi," today. My cat, Collette, was washing herself in time to the song, "Treat Street." When "Star Song," the tune after it, started, she slowed down just enough to accommodate the change in tempo. It could be that she had been washing her fur for a while and would have slowed down anyway.
I prefer to believe she has an innate sense of rhythm.
