My gray tree frog doesn't trust me anymore!

[Dace]

I did listen to their suggestion. They have water bowls now...

[victorsgrace]

It is necessary. They drink through their skin. What you saw in the wild, was an animal sitting there, at that moment, with opportunity to move to another place if needing water or shade.

Also you shouldn't dry out your tank... Amphibians need moisture and it serves no hygienal purpose, but can invite mites and what not to the feces. Please follow the careguide apropriate for your animal.