Classical conditioning can definitely occur after only one pairing of the US (unconditioned stimulus-feeding response to prey item) and the CS (conditioned stimulus-opening the tank to handle/clean/etc.). But if that's true for snakes who knows...
Dennis
This makes about as much sense to me as this: if you blow up a balloon it will expand but if you don't it could but may not....
I may not be very smart, but what if I am?
Stinky says, "Women should be obscene but not heard." Stinky is one smart man. www.humanewatch.org