yes, there's a whole bunch about Pavlov in learning theory. I'm currently reading The Thinking Dog - good book
But, specificly salivating, yes on that too. Our lab would drool everytime I started getting dog dinners ready.
I love it, and yes, I can get Otis to turn on a dime, while in full B-5oo mode through the yard..if I say treat/food/snack or anything edible..
He is licking his chops while I prepare their dinner..in the am, and they have just had their breakfast..silly, food deprived, not loved enough B