How do all cats know when you want to take their picture? Every single one I have ever known gets up and moves the instant I point a camera at them.
Even this one, who is a feral cat that lives outside in my yard. She was just sitting on the ledge looking peaceful in the morning. I thought it would make a nice picture... but, sure enough, before I could press the button, she got up and moved!
How do they know?
Note: This one is a sister to Munchkin, who we adopted to live inside with us. They still talk to each other at the window.