The rocks are large (compared to him), about 2-3 inches across. Basking temps range from ~85F to 70s if he needs to cool off he can go lower in the cage.
I forgot to add that the vet did some stomach palpitations on him to determine if anything was impacted and said there wasn't anything in there.
From what I was told by a vet tech, they are born with them. (Which is possible as there are parasites that can be passed from mother to child in womb - think toxoplasmosis gondii [pregnant women shouldn't change cat litter due to the risk of this parasite])
I think feeders can also have...
My panther isn't eating he is 10 months old. Before he stopped eating he would get gut loaded dubias (which were given dry food - mixture of bee pollen, wheat, oats - as well as apples, oranges, bananas, mangos, and greens). He gets fed every other day, and the dubias get a dusting of Ca without...