I know that dogs don't like the sound of fireworks or thunderstorms, and almost any pet will react to the sound of a vacuum cleaner. Last night I was watching Little Miss Sunshine (again), and the part came where the dad honks the horn of the VW van and the horn just keeps honking on its own, one loud hhhhhooooonnnnnnkkkk for several minutes. Rocky, my cat, was sleeping on the couch, and as soon as that honk started, he fuh-reaked out. First, he woke up with a start and stared at the tv. As the honk continued, his ears pricked forward and his eyes got huge. Then, he slinked (slunk?) off the couch, still staring at the tv, and hightailed it into the kitchen, where he meowed at the door until I let him out.
Rocky hates the vacuum cleaner noise, and he is afraid of the noise of crumpling up a plastic shopping bag (I nave no idea why - it's not like I once crumpled up a plastic bag with him in it), but I have never seen him freak out to a car honk before. Do your pets have any weird noise phobias? Let me know!