The wrong scratching pole

I've been looking for someone to take care of Mittens while I'm away on expedition. Mr. Jensen volunteered, and I was surprised. Mittens is fascinated by the slow movement of mr. Jensen. I think she first assumed that he was stalking prey, moving slowly so as to better pounce on, say, a library user with overdue books. She mimics him, sitting a crouched position, with her head outstretched and gaze fixed, moving slowly towards him, and enjoying the game.

While this is innocent, she has also been using his leg as a scratching pole at times, and I've had to scold her severely for that. But despite shredded legs, mr. Jensen seems to have bonded with the cat and I am grateful that he will take care of her during my absence.