I dunno, I find it pretty interesting too (and I hadn't heard any stories like this before). It's a pretty significant change in behavior, especially to just happen out of the blue one day.

It's not the laziness that is interesting, it's how the cat responds to it: by actively choosing to "retire" indoors among the humans as a house cat. Do you know of any other animal that does something like this?

Upvoted for thoughtful phrasing, even though a wild-ish animal deciding to go domestic for retirement does seem interesting.