Vultures are just as terrifying as you thought.
National Geographic got a head start on promoting their January 2016 vulture-themed issue by releasing a video demonstrating what it would be like if vultures were to eat your rotting carcass. They put a camera inside a wildebeest carcass and let 'em rip. The result is pretty disgusting/terrifying. The video also ends with a message about how the vulture population has declined by 95% in some parts of the world due to poisoning by humans and habitat loss. That is of course very sad, but also not a great tactic for making us care about vultures. They should've filmed one wearing a silly hat or something, or made it look like it was lip-syncing Rihanna. Write that down, Nat Geo.