Possum has been exerting himself to jump onto the bookcase lately. Usually that's Toffee's territory; occasionally we see Lion or Harris up there. Never Wendy. Wendy is strictly low-altitude.
As Top Cat, Possum has the freedom to go anywhere in the house but he is a little, um, portly for athletic jumping. It's not far from the back of the sofa to the bookcase, but it requires agility and missing the top is embarrassing. When anyone does fall, which is rare, we hear the racket and we freak out about possible injuries. Any cat would resent the indignity.
Harris can't bear it if someone else is getting more attention than he, so he jumped up, too.
Possum loves Harris, and doesn't mind sharing the spotlight.
Getting down is an even bigger challenge for Possum. Everyone else jumps onto the sofa cushions but Possum gets macho and jumps more than four feet onto the floor with a painfully heavy thud. Sometimes I seem him limping a bit the next day.