That's too bad. This would have been absolutely terrifying to encounter. It could have even had a special ability where it regained health with every attack, a sort of life steal attack that references its blood-sucking capabilities. It might have been even able to do this to other creatures and dinos, draining the life from one and then injecting it into another to restore health. That or some other way to make cementing paste or something like that from the blood it drinks, because ARK knows we don't have enough of those creatures.