alt Hacker News"...He'd make a pile and leave it for a week or so..."
You're saying that your greyhound wasn't just getting drunk, but actually making his own booze? Not that I don't believe that its possible, but that's a pretty big deal... If you had documented that it could be a bombshell ethology paper.
“Making his own booze” is a bit of a stretch. He figured out the timing between the apple sugars fermenting and when bacteria start turning that alcohol into acetic acid. Probably helped by crushing the apple a little when carrying it or the apples bruising when they hit the ground, but it’s not like he figured out how to juice the apples and make an anaerobic environment to make cider. Dogs are already known to eat windfall fruit and store it in food caches, so it’s just the timing that matters (which could be as low as 2-4 days if its hot and the fruit is well crushed or bruised).