Okay, the frilled dragon is not free roaming. I am just trying to get the kitten used to lizards while it is small so that it does not see them as toys or food when it is an adult. I do have a 3.5' iguana that is free roaming and if given the chance would rip poor JD apart. I am honestly more worried about Julio hurting Dorian than the other way around. Also, Julio seems to tolerate the cats at my parents place when I bring him there to be babysat and the cats there have never bothered him so I know it is possible.