So since about a week-ish ago, my BP has had a dirty spot on his nose. I'm just wondering if this is something that looks like rot or an infection, or he just shoved his nose in the dirt I put in a couple spots in his tank (which he has done before) and it just was damp and got stuck. If it is, what's a good, safe way to wipe it off? Even just to make sure it isn't dangerous, I should probably try to see if it wipes off. He's pretty headshy, but it doesnt come off when he just dips his head into the water. He's in shed right now, so he's also probably uncomfortable to start with. Below is a picture from two days before I noticed where his nose is clean, then the dirty spot I noticed after.



From a couple days after:


This one is tougher to see, it's from today in his humid hide but the dirt is visible


Side of his head from yesterday: