Dododex
ARK: Survival Evolved & Ascended Companion
Utility Tips

What is a desmodus used for? desmodus utility tips and strategies in ARK: Survival Ascended & Evolved.
Desmodus can be tamed with blood packs, it’s a passive tame, and you can give it smaller tames of yours to make its efficiency go higher for more levels.
The Desmodus can harvest spoiled meat in absurd amounts, the bigger the creature, the more spoiled meat you get, which is good for getting narcotics.
Desmodus can also harvest blood packs from creatures, without killing the creature. If you have 200 blood packs in the Desmoduses inventory, you can craft a sanguine elixir, which is good for taming, as it raises the taming bar by 30. It can also be used for imprinting + passive taming.
At night, you can use echolocation, which turns the Desmodus invisible, meaning you can easily steal Wyvern eggs, Drake eggs, etc.
The Desmodus also can fly in caves.
Theese things are busted, a good imprinted Desmy will drain stamina so slow you barely have to worry about it, natural nightvision, can fly in caves (and on aberration if you spawn one in ((fliers usually don't let you even hop on on AB), can turn invisible and latch to walls and ceilings you can use the echolocation to detect any enemies you can't see. They naturally regen health a little when attacking (you don't have to use the lifesteal just regular attacks regen health), they collect insane amounts of bloodpacks and from what I've observed as long as they have bloodpacks in their inventory they can consume them on a 30sec cooldown to heal 2000 health. They deal decent damage and are insanely maneuverable so they can take on absolutely any threat too. You can use weapons on the backs of them. They fly fast and can pick things up (from my observation their carry ability is in-between an argy and a griffin) also I can pick up a deinonychus WITH THE RIDER STILL ON IT with one (Saved my friend and his Deinon from lava once) and that's all the not that well documented stuff on this. This thing is insane.
Baby bats will eat blood packs AND RAW meat and RAW prime meat like their parents, but raw meat will only restore 10 food for both babies and grown Desmodus and raw prime will restore 50 food for both. Neither will eat cooked meat or cooked prime meat. Blood packs restore 200 food for babies and adults.
So based off what we know Desmodus is a vampire bat, speculating that it will have an echolocation ability and be able to drink blood (somewhat like blood wyvern) it would be interesting to see if it could be used in some of the larger caves not necessarily as a flyer but as a climber along with possible attachment to enemies (like deinonychus), all just speculation, I hope people love it! :)