[Found it]

I found Mafalda (my cat) on the 21st. I was taking my dog Jack outside--I had taken the day off from work--and called Mafalda more out of reflex than anything; by then I was pretty sure he wasn't coming back--he'd been gone for almost four weeks. But he started meowing back at me when I called his name.

At first, I thought I was hallucinating; but I kept hearing him, so I rushed inside with the dog, hobbled up the stairs, shoved my shoes on as best as I could, and hobbled back down, almost falling on my face. I started making my way down the shared strip of grass, still calling, and he meowing back, until I came to the unit that had reported fat cat sightings, and there he was, hiding in the bushes. I dragged him out and took him out, cursing him all the way back.

He's lost some weight; his butt is pretty bony, but he still has a big floppy belly.