I'm amazed at what animals "learn" with just a few repetitions (i.e. conditioned responses).
Pavlov's dogs salivating at the ringing of a bell after the sound is associated with food.
Cats learning that if I catch them in my yard using a flowerbed as a toilet that it best to "run" before the barrage of curse words and bullets start.
Grizzle bears coming to the sound of a rifle shot since they've learned to associate it with food (usually a fresh elk or mule deer gut pile or a slow, fat hunter).
After a successful hog hunt this past weekend, I took two hog carcasses to the field where hides, bones and guts are usually discarded. I guess it has been slim pickin's for the buzzards since deer season ended a month ago. After dumping the pigs, I turned around to what looked like the opening scene from The Birds.
A Man in the Woods