Stole an egg and got killed with my pteranodon. Whent back for my stuff and the bronto (lvl 10)started chasing me again since I had the egg. I managed to trap her in a stoney area and knock her out with 30 tranq arrows. Took a little while for the tranquilizer to kick in but I managed to tame her in the end. While that happened, 2 of my trikes I had set to passive mated and had a lv35 kid. Unfortunately it died after I forget to put food in its inventory while I went to check on the brontos taming progress.