OK I have to jump in here now. I currently keep three species of Bufonids myself, was four, but the green toad died. Not a single one of my toads buries down deep into the earth. The rococo will make a shallow depression and sit in it but thats it.

As far as tank size, he/she is in a 30 gallon tank, which is three times the the size he/she had when he/she lived at a certain museum, of a certain university, that has a certain yard, that you really can't park a car in. Not going to name names. I think Seth already pointed out that rococo's are bigger than marine/cane toads.

For the most part, my toads do not hide. Once in a while, maybe, but for the most part they are always visible.