You know why I love this guy? Well it's not so obvious, but i am here you tell you my tactic for collecting metal. So take argentavis and lift your anky to places with a lot of rocks, because he is GREAT for collecting metal.Plus he is great for defense, because of his attacks. Your welcome and for taming just shoot it in face while running backwards. (They are pretty slow,you can also feed it with any berries).