I had the day off of work a few days ago, so I was outside alone in the middle of the day. It was nice and warm outside (60s) so one of the times I headed back to the house and lay down on my stomach on the patio by where Pawz was enjoying the sun. I started off by petting her. When I paused she pushed her head against my hand so I would keep petting. I did that a few times before I lay my head down on my arm. The next thing I knew, she keeled over and lay beside my hand. She didn't bend her knees or turn in a circle to get comfortable, just keeled over. I don't have a picture of that, because like I said I was alone that day, but it was sure fun. I've heard that if the cat keels over like that they are very content.
How do you know when your pets are content?