Ive had my green iguana hoxton for a while. Im not sure of his age but Im thinking 5, hes about 4 ft long. Not once have I heard him or his stomach make noise while he poops. Im working on potty training him on peepee pads so I like to make sure he does what he needs. But just a few minutes ago either him or his stomach was making a weird growling noise and he had trouble pushing out his poop. Is there something wrong with him? Or is he constipated? Please let me know. Im always worried about the little things with him.