Does your pet listen to your system?

Well I'll be!
I had a hunch I wasn't the only one that had a pet that listened to the stereo!
Ha!  Now we need some expert in pet psychology to explain why they must like certain music types over others......

So ozzy s dog likes good stereo separation like Mina does!

This is quite interesting!  
Pets listening to music appears to be very common, which is a good thing!
I have a vacuum tube system,  all Conrad Johnson.  I also run a moving coil cartridge, Lyra Delos.
I wonder if pets can discern between solid state or vacuum tube; or digital vs analog?
Mina does not seem to discriminate against either digital or analog.  She likes both forms of music presentation. 
Although, she is quite partial to Steely Dan.....