Most of my dinos keep escaping because they faze through fences and walls. At first, I thought they were just breaking blocks, so I changed the fencing to the reinforced glass. I also turned off block breaking to see if that would help. I went on a mining trip and when I came back, a sarcosuchus was chilling next to the enclosure and a triceratops was next to my house. I had this issue in the past with the brachiosaurus, the stegosaurus, and the anklyosaurus.