Well he does a lot of stuff to piss me off lol. One of his old things he liked to do was push substrate into piles and then shove a hide across the bare cage floor which is like nails on a chalkboard. I solved that by just using 2 bags of substrate now which makes it deep enough that he cant really push it all away to make a clear 'runway' for the hide haha. So now he 'thumps' his shelf up and down. I thought someone was outside the house or an animal. I followed the sound and looked in Caesar's cage to see his head stuffed in there and one side of the shelf bouncing up and down making noise. I slid a door open and started touching his tail and back section which made him quit after a couple more thumps. Then he came over to the open door and sat there with his head on the litter dam looking at me lol. I will say one thing, retics are loaded with personality. Like i've said before, Caesar and Harley both make my day with their interaction.