I saw this bug in my cali king snakes vivarium, it was red, maybe mite larvae or something? I know mites are black but wandered if it could be a mite larvae
Snake mites can be black, red or grey so it could be a mite but there wouldn't be just one so check the water bowl and snake to see if you can see anymore.
1.0 Milksnake 3.3 Kingsnakes 1.1 Royal Python 1.2 Cornsnakes