I'm curious if anyone has ever encountered anything like this: I was visiting a female friend of mine in a different city over the last weekend, and she has a couple of cats, one male who was neutered a couple of years ago, and a younger female one. Now, I was staying at her place, and we slept in the same bed, and in the middle of night we woke up to the smell of cat urine - turns out the male cat had urinated on the chair next to the bed. Now, this was very strange of him, as he is few years old and had never done anything like this. We shrugged it off and cleaned the place up, figuring it was just a strange coincidence, but on the following night the same thing happened - cat pee was all over the carpet. We were speculating that this was because of some sort of social territory marking or a call for attention because of me sleeping in the same bed with my friend, but couldn't figure it out. The cat seemed perfectly healthy otherwise, so we ruled out any physical issue with him. I think I've heard that dogs can be quite jealouse because they have more defined social structure, but cats too?