I think most GTPs poop off the perch but Pat is a weirdo and likes to come down and poop on the floor. He also likes to dig and play around in the damp Reptile Prime. I find all kinds of dig spots and pushed substrate in the morning. Last night he was all over the floor, the plant pots, the live plants, fake plants, perches, he was just going bananas last night and cruising all over.
He even tried to caudal lure me a little when i went over to stare at him on the front perch. I call the 'pat wave' lol. When i wiggle a finger at him to say 'hi', he wiggles his tail at me to say 'hi' back. Just kidding but he does do that haha.