If you see one of these, stay far away. If it runs at you and you can’t kill it, you dead, especially if it’s an alpha or in a pack. Your only hope is if you find something that’s strong and will attack it back. Even if the raptor/ raptors kill it, you’ll still have enough time to get away.
TLC patch coming March 2018 adding a pack bonus wherein the leader roars and the pack gains damage resistance, movement speed, and attack speed buff for 15 seconds with a 45 second cooldown, will also gain a pounce and pin move similar to Thylocoleo which can be used on small creatures or players. Kill it to escape. Like so people can see!