Sure enough we followed him into our bedroom to find an enormous rodent lying dead by the bed. It was a big mouse, big enough to be a small rat or a little marsupial. Much to Bertie's disgust, Fixit wrapped up the dead mouse / rat/ marsupial and put it in the outside wheelie bin. After which he closed all the windows and locked the bad cat out.
However, an hour later we walked into our bedroom again, only to find an identical large rodent in exactly the same spot. Leaving us to wonder: could Bertie have opened a wheelie bin and done a spot of retrieving?
We checked. No. Large Rodent #1 still there.
He'd gone and caught an identical rodent and placed it in the same spot. Just to teach us. I think it was his way of giving us the finger, frankly.