If your interested in breeding, for the first hour you need to watch the babies health/food and you might have to force feed it, health goes down pretty quick before they decide to eat again so force feeding helps. Just make sure to not over feed, after the first hour you should be fine to check it like you do when raising a baby rex. (:
Get a few tranq arrows, and snipe it while it's in the air and aim for the head and fire once or twice. Then feed it 2 meat and narcotics if you need to do other things. But I used my fists so it was unconscious.