Hi, My Sheltie Theon LOVES his crate and sometimes sleeps upside down. He is five months, I've had him for almost two days and he will go to the vet this Friday for microchipping and rabies shot. I just want to see if there is safe way to line the crate with padding that doesn't make it hotter or pose some other hazard. Most crates I see have the same distance between bars, I don't want to use a carrier because it has less airflow. His previous owner (reputable breeder) says this behavior is adorable and gave me heads up before I took him home. I'm worried that he'll get suddenly wake up and get his leg caught since he is a light sleeper and reacts to loud noises outside (sometimes a moron will zoom down the street with his muscle car). Right now his back legs are propped up, resting on the crate. This morning, he woke up with his leg asleep, moments later he walked and ran normally. I texted his previous owner and she said that sleeping awkwardly is fairly normal and she's not worried. Maybe he actually briefly hurt it because I woke up the sound of him play-rolling in his crate this morning and he was upside down, smiling at me. But I think his leg was just asleep. Thanks!