I don’t know about dogs and classical music, but some of my cats are absolutely hypnotized by Jimi Hendrix’s “Electric Ladyland.” My theory is that it’s the weird high frequency phasing effects that sucks them in. They’ll sit, without moving, exactly in the stereo “sweet spot” through all four sides.
Are they all female cats?
I had a tortoiseshell cat who adored certain kinds of classical music involving wind and violin insturments.
After observing her hehavior I investigated and discovered that some instruments create high-pitched sounds similiar to those of a kitten’s distress calls.
Piccolo and violin solos were her favorites. Tina would sit on the back of my chair, face turned intently towards the radio, listening. As soon as the piece finished, she would get down and go about her cat business.
My cats seem pretty comfortable with the background music of Bejeweled Blitz.