Poor baba, I've heard about a lot of plants (even ones made for reptiles) being sharp and snakes getting injured. It doesn't look deep which has me thinking he's maybe snagged it while rubbing the shed off. Personally I would give the plant a good inspection and if it has any pointed bits I'd remove it and just keep the hole nice and clean. Looking at it o my phone it actually looks like a scale, but that could just be me trying to look at a small picture. Looks very similar to what my female done (My first post on here) and it sorted it's self after the next shed![]()