It may be a peaceful vegetarian dinosaur, but if you attack it, it can be very aggressive. It might stomp you with its feet, or hurt you with its spikes. So, you'd better stay above ground and fight from a safe distance.
If you win, you earn a baby Antarctopelta. Take it to your house and help it grow. When you have a grown up Antarctopelta, you can use it to BUILD for you, since it's a very strong animal.
You also have to build a WEAPON FIXERS House, where you can place your Weapon-Fixers.
If you haven't got such an animal, you can buy one in the Store.
Good luck!
