I handle my garter Gojira about once a week and I noticed something bad today. The left side of his jaw seems slightly open. I watch snake people a lot on youtube (like ViperKeeper!) and it reminds me of mouth rot. I think I'm going to do a full substrate change--but it has only been about a month since my last one. I also disinfected his bowl and refilled it. Does anyone have experience with this with garter snake/know what I can do? I don't see any swelling or or red spots or pus. He just ate yesterday (some fish).

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https://drive.google.com/open?id=0B8...01SME5KT2tWczQ

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