I know for sure that BOTH cats and dogs remember bad experiences. My liitle cocker poo, Cocoa, fell down behind the bed when he was still a puppy, and even as an adult he would go over to that same spot and LOOK at it...before he would settle down and go to sleep.
My cat, Oscar, remembers the day I TOOK him from his home. He lived with one of my clients, and her step-daughter was about to send him to a kill shelter...so I said I would take him. The step-daughter's husband chased him ALL around that house, and terrified him...and then they got him into a carrying case. Oscar remembered my RED windbreaker for the rest of his life...because I was wearing it that day. Whenever I put it on, after he was living with me, he would get scared and run under the bed. I had to get rid of it.
