Tyson is oddly endeared by the mistreatment of furniture.
Most things in Tyson’s life either come from rebelling against his father or as a way to survive, this is definitely the former. Growing up a lot of the furniture was antique or set pieces to impress fellow professors or donors. It was more about being seen than used.
That was also the cause of Tyson frequently choosing to sit on the floor when a perfectly good chair is next to him.
He likes the way Lily perches on top of the armchair and Bobby hops onto the coffee table. Tyson could easily train them not to, but he enjoys that behaviour and knows that they will listen when he orders them off, for whatever reason; usually to prevent a glass from getting knocked over or allow his maps room to dry.
Tyson can frequently be found perched on countertops or standing on his bed: which he uses as a seat, desk space, dog space, and exercises space far more than sleeping on it. Around family or the people he treats as family, Tyson will frequently be found sat cross-legged on a table or squatting on a bar stool.
He has several treasured photos of The Colonel sprawled upside-down in chairs or with his legs hanging over the edge of the armrest. Tyson also has a photo of the Moriarty Mirrors, one sat with his legs danging off the table whilst the other sits sprawled across three chairs.