These guy are great at stealing wyvern eggs, go invisible at night and boom easy wyverns or any egg you want. They can go in caves so feel free to get some rock drake or magmasaur eggs. Blood packs to tame of just let them eat at your health sacrificing an tamed animal with blood packs gives good taming effectiveness. Blood packs can be farmed by a desmodus and crafted into sanguine elixir which will give an instant 30% taming. Can dive silently, not as good as GRIFFINS but you gain good speed. They can latch on to ceiling or walls and can do a screech showing the location of dinos. (THIS WORKS BETTER AT NIGHT) I use mine to tame gigas since you can shoot on them. That's all I have to say

I know your gonna name you desmodus DRACULA don't lie