Yogurt Machine For Sale

I bounght one of those "70s version yoghurt a garage sale. I made yogurt, but forgot for 20 hours. The recommended time is 8:00. Is there a problem with the cat now? The engine was still hot, the only way to disable it is to unplug it. Would he now too many bacteria or not?

No, that's okay, once cooled.

Not likely, but if you either put it in the refrigerator or freezer, it will be fne