I've been taking video of Captain breathing and trimming them to a minute with video editing software, then counting how many times he breathes.
I'm taking lots of little videos because he moves or smells something coming in from the window or is dreaming or some other cat walks in front of Captain and the camera.
Video I took last night had him breathing at thirty-eight breaths in that sixty second interval. About an hour ago, I got him at thirty-two breaths per minute.
He's in the window in the family room. There's a "pillow" of sorts in the window, actually just old bedspreads folded and slipped inside of a cover (much easier to wash). At times, there are three or four cats on it. Usually, just two.
It seems that whenever I can see him, I start watching the breathing. Brian was in the hallway with me and I looked up and started watching the breathing. It looked almost normal. I stopped Brian and said "look!" and he did.
Then I realized it was Ross. Captain was sitting on the coffee table. I had looked right past him.