Quote Originally Posted by Badger View Post
I know that sand can cause impaction in herptiles, toads may be an exception, but there are some nasty horror stories of beardie impactions due to sand, but beardies are at a higher risk for it due to their poorly designed digestive tract. I don't see how it would be impossible to cause impaction in amphibians though, just because they are so small. I have never personally encountered any instances of amphiban impaction, but I would rather be safe than sorry. As for the fungal/bacterium: I'm not sure if you would be able to see either, but I am not very educated in either of them.
As I said, I am talking about WC American Toads that come from a sandy enviroment, I do not know if sand would be a problem with other amphibians. But as far as I am concerned, sand is a safe substrate for toads.