While I was in my base, I noticed a Rex nearby. I decided that I wanted to tame it. If I got it, it would be my first carnivore on the island. I prepared 70+ tranq arrows in my 150% crossbow. To be safe I made a chain bola to use in my defensive ballista. In preparation, I put all of my dinos (two parasaurs and a stego) on passive, so they didn’t attack the Rex while it was immobilized. Everything started out well: I hit the chain bola and hit the Rex with about 10 tranq arrows when THIS PEGO came and stole all of my tranq arrows. By the time I chased the pego down and got my tranq arrows back the Rex was loose and charging me and my dinos. All the dinos I had died along with me. It proceeded to puppy guard my base until this day.