Mr. Monk Takes a Vacation - S1-E10
Corrected entry: When Monk is being heckled by the hotel comedian, he admits to bringing his own towels and blankets to the hotel; however in an earlier scene we see Monk reeling in horror as he examines all the bodily fluids with an infra red light. The blanket on his bed was not his own but a "dirty" hotel one.
Mr. Monk Is on the Run (2) - S6-E16
Corrected entry: When Mr. Monk is at the hotel, a teenage girl comes in to change the towels with the puppy Eureka. At the hotel, Eureka is referred to as a "she" by both the teenage girl and Mr. Monk. However, at the end, when Mr. Monk "solves the case" of how the bomb will be set off, he talks about puppy Eureka again. This time, however, Mr. Monk says something to the effect that "he" (referring to Eureka) was wearing a special dog collar instead of saying that "she" was wearing a special dog collar. Not an error that the detail-obsessed Monk would make.
Correction: Monk has an eidetic memory giving him complete recall of everything he sees and hears which would include the dogs correct gender as female and not male.
Correction: We can see that Monks memory is sometimes not perfect, an example would be when he can't remember the exact order of his fears without his list. Monk accidently saying "he" instead of "she" is very likely considering it was the heat of the moment and that he is human.
Correction: Just because Monk brings his own towels and blankets to the hotel, it does not mean the room did not have hotel towels and blankets already in the room. Monk was looking at the hotel's blanket, not his own.
Mark English
This seems like a correction without watching the scene. Monk didn't use the IR light before sleeping in the bed. He was already a guest at the hotel and brought his own sheets. Monk didn't bring his own sheets and towels just in case the hotel didn't have any, he brought them to use and wouldn't have the hotel's blanket on his bed.
Bishop73