I would have to say leopard ( the African cousin of our Indian panther ) , crocodile or cape buffalo ( the African cousin of our Indian gaur . )
An interesting thing about leopards is that while they are extremely dangerous , an encounter with an unwounded leopard is seldom fatal ( except for a man eater ) . The average leopard will pounce on their victim and give a series of quick bites and scratches with the claws on it's fore legs before jumping off. The attack is severe , but quite brief . In my career as a professional shikaree , l have not seen an unwounded panther ever carry out it's attack for more than 30 seconds. Provided good medical facilities are nearby , you will most likely survive , but will look as if some 1 ran a lawn mower over you . A man eating panther / leopard , however will carry it's attack through to the end .
Here is an example which l had shot in Takalghat , India.
The Ganges River crocodile is the single biggest threat to the people of South East Asia . More people are killed by crocodiles in every year than all other Indian dangerous game combined . A crocodile , unlike other animals is not instinctive or feral in it's mode of attack. It is extremely calculated . It will seize it's victim by the calf of the leg and drag them into the water. It will drown them and then take the corpse into a hole near the stream / swamp / river and will only commence eating the corpse when rigor mortis of the corpse has begun .
Here is an example , l had shot in the 1960s which had at least 2 confirmed victims .
The cape buffalo / Indian gaur is a thick skinned creature and very ill tempered . In the case of an Indian gaur , we local Indian shikarees used to call them " grey forest ghosts " due to the stealthy manner in which they could move through the forests. A buffalo will often charge without provocation , which is what makes it so dangerous. It often attacks people in the thickets , which makes it extremely difficult to see them until they are uncomfortably close to you .
Here is an example , which l had shot in 1969. This example gored my best friend and fellow professional shikaree , Tobin Stakkatz so badly that Tobin lost a kidney and retired from hunting dangerous game.
Even though l have unfortunately never had the privilege to shoot an elephant , l have accompanied quite a few forest department officials when they had to dispatch rogue Indian elephants and have seen many shot before my very eyes. An elephant is the least likely to carry through with a charge .
I hope this helps.