Credit to OP for the drawing, now find the goldfish.

I got married this past weekend. Yesterday I was washing some dishes in the sink and took my ring off and set it on the counter. Our cat then jumped up on the counter(we don’t let him up there but it was just for a few seconds until I could dry my hands and push him off and clean it). I had looked away for maybe ten seconds at something across the room and looked back and it was gone. I was pretty certain he swallowed it for a little while. It’s a plain satin black men’s band.

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He's a little guy