That is what they do apparently. I got my whites from Petco also. I asked for the largest ones they had, and mentioned it was a bad idea to have mixed sizes in the same cage. The clerk informed me they had already learned that the hard way... Mine do seen to be springing back now, after the one died. But they are both eating well enough that I actually fed them tonight roaches coated in vitamin powder and they both ate. This was a first for me, it took several weeks to get here. At any rate if I buy frogs again it will be from a breeder recommended here. I want to rescue all the frogs in the pet stores but we have to stop purchasing them there or they will keep selling them... Maybe someday pet stores will close and be replaced by supply houses, and micro zoos, where the animals are well cared for... Probably not but it would be nice.