I had one of my villains Crowley mourn the loss of his mate with a grave set up for her in the herd’s den.
One of the smarter Fluffies wondered if the grave was a continual reminder for Crowley meaning he was never able to properly forget about her death and move on.
It is a concept that should be addressed more, Fluffy simplicity is part of their nature but they can be a little more complex if you let them.