This is one of the best tames in all of ark! It is the only flyer that can go in caves it has night vision it can go invisible and it has echolocation. It can get blood packs very easily. And it is the only way to craft sanguine elixer which can give an automatic 30% to either taming or imprinting ( note it can only be used once per imprint/tame) it also has a life steal effect and you can shoot while riding. It is also fast and has a dive ability kind of like the snow owl it can land on walls and roofs and also it has decent health and melee. Definitely worth the tame!
Latitude:38 Longitude:75, inside a cave under a waterfall
Latitude: 90 Longitude: 78, cave as well
Latitude: 50 Longitude: 14, cave
Use a Daedon, put meat inside, set to passive, passive healing on and kill all the other desmodus until there is only one, then duck under the Daedon and the desmodus will grab it, suck it's blood and the effectiveness will go up 3-4%, don't leave the area, hide and wait until 100%. Once 100% effectiveness, let it grab you (make sure you have 150-200 blood packs) and you'll tame it. Use cryopods if possible to bring back the Daedon.