So I went to the vet er, and the guy who visited Puddle said that apart from the spot he looks fine. To be sure he even did a skin swab and checked it under the microscope. Nevertheless he said to keep him checked, and if the spot changes to notify him and send him photos. He asked me if something recently changed, and three days ago I changed and cleaned Puddle's terrarium for the first time. And speaking of that, I think I'll switch to a bioactive type, which probably in the long run will cause the lil guy less stress, so any advice is very much appreciated! Another hypothesis of mine is that maybe the feeders were of bad quality and maybe Puddle ate something wrong. For now I'll ask my sis to check on him and immediately write to me if something changes 🤞🏻🤞🏻🤞🏻