As soon as they appeared, about 60 million years ago, carnivores have seen their survival closely linked to that of the herbivores. Ever since, it has been a never ending chase to adapt between the prey and its predator. The bottom line is that the life of one depends on the survival of the other. It is a fragile balance and the least specialized a predator the most widespread its species.
However, since meat is an unpredictable resource in the savannah, no mammal carnivore - even vultures – can afford to exclusively depend on it.