What animal eats a vultures?

Generally vultures have no predators, Vultures have a defence mechanism, where they regurgitate their food ( which has a most foul smell ) when faced with danger, sending predators off in a hurry whilst enabling the vulture to fly with less weight on board. Having said that, when the vulture has taken off, whilst it is gaining height some large cats ( such as lions ) will jump and try to grab the vulture.