This cat has found a new playground, and not a thought was passed onto whether or not it was right or wrong. Books were knocked onto the floor, claw marks trailing up to the top of a book shelf where he had climbed up to the top to stand and prowl around on the jungle of shelves. From there, hopping from one shelf to another, and occasionally slipping due to not being as graceful as a house cat and weighing them by over ten times.
Picard probably noticed the evidence of his adventures, but did he think to look up to see the big cat poised to jump to another shelf and missing it by about a yard. It's a moment in which you wonder how a creature so athletic could miss by that far of a margin and fall straight down.
Thankfully, he doesn't seem hurt when he gets up and shakes himself off as if nothing had happened.