Your cat looks a bit like the monster called Mickey my grandparents had in the 70s and 80s. Long, lean, and seemingly capable of killing anything then bringing it up three floors to present it to you if he felt miffed about something. He mostly did this if left alone all day, but he was not above doing it when visitors were present. Maybe he resented their presence.
One day decided to try his tricks while my mother and I were there and brought up a live sparrow. My grandmother and young aunt were beside themselves and the cat just kept looking from one to the other as the panic mounted. You could almost see the little bugger grinning at the chaos. However, he reckoned without my mother. She grabbed him then hung him out the window by his back legs three floors up saying "Let it go, Mickey". Mickey saw the wisdom of this advice and released the sparrow which flew away, apparently unharmed. Oddly enough he never gave us any crap over it, but he continued to wind up my grandmother and my youngest aunt. He knew whose buttons he could press and get away with it.