I get hedgehogs in the garden every evening, and they do leave rather wet, green poop around from time to time. No idea why, they get fed exactly the same every day, so it’s possible it might just be something else they’ve eaten. I give them chunky dog meat in gravy, creamy centred kibbles and calciworms. They’re pretty indiscriminate where they crap, too – there are three plates in the feeding station, one hadn’t been touched and there was a poo right in the middle, and not the first time they’ve done that! 🙄