This is interesting, I've seen the same thing with some older folks how they can change and become a lot more friendly, especially when they start needing assistance to do things they took for granted. I've done a lot with older folks and I know they do appreciate it. I've played the piano in nursing homes and in restaurants outside of homes. At the end of the song some will stand up and applaud, it's so cute! I also cleaned a fish tank in an Alzheimer's nursing home on a regular basis, it was interesting to experience their dementia and delusions first hand, it was pretty bizarre. This year I'm thinking of bringing in some of my new puppies before they get too big. I bet your snakes will be a big hit!