Quote Originally Posted by mpmistr View Post
Oh and just to avoid any kind of tragedy you may want to make sure you use no substrate, large river rocks/pebbles, or very fine sand (like pool filter sand, not stuff like tahitian moon they sell at pet stores). Your typical aquarium gravel is a bad idea, these guys can gobble up gravel and choke/become impacted which would be bad news obviously.
These frogs can distinguish what's edible and quickly regurgitate gravel, stones, etc that they accidentally scoop into their mouths. Also, a question you may wish to think about is: if frogs go around ingesting rocks, gravel, bark, etc., how is it possible that they've managed to survive for so long in the wild? The "impaction" myth has been around for as long as the Internet but it has no basis in fact in my experience of keeping Xenopus continuously (mostly on aquarium gravel) for 26 years.