Ah, cute kitty on the “grooming table”! I hope he can go for many more months. So sad when they become senior kitties and start to break down. My kitties aren’t in the senior category yet—my Alfie is getting there—he’s 11, but my mom has had a couple make it to 19. One of those was actually 19.5 and some others to 18, 17, and 16. I think it was the kidneys on most of them that started to go out.
Here is Tiger as a 2-year-old. She lived to be 19-1/2. ~ August 1982 - February 15, 2002.
She was a stray, and when we took her in, she would eat anything that didn't eat her. She got really tubby, and we
used to call her "Little Rotunda," but she shed the weight naturally when she wasn't in a panic for her next meal
because she could count on us to feed her on schedule.
This picture was taken just a few weeks before she died:

She sat there like that in the hallway for quite some time. I took several pictures of her since I loved the composition,
and I was aware that I would cherish the image as a memento.