To answer the OP directly, yes I have lived in Africa, and I have gone on a few safaris (You guys are dangerously deluded if you think you will anything but snakes and mbe some monkeys where ppl live. Unfortunately I got enough questions when I got back to Europe to lead me to believe that most people are that deluded).
Dangerous animals I have seen (National parks, but at least there are no fences. Except a few to slow down poachers):
-Hippos (The biggest cause of large animals killing humans in Africa. Saw a pair fight once, kinda scary)
-Lions (Duh! Very lazy, just big cats really)
-Crocodiles (I got to hold a baby by the mouth and tail, it was cool. Lots of rivers n lakes where you just can't swim, cause you'll get eaten. There was a story of a girl in a different school who was canoeing and got grabbed and killed by a Croc)
-Water Buffaloes (Saw a HUGE herd once, hundreds of them, we had to stop the car and wait for them to pass.)
Elephants (Not very aggressive, but you will stand no chance of survival of one decided to charge you. Horrible story of a wife and child getting trampled.)
Some snakes, but can't remember which ones. I don't think I've ever seen a Black Mamba, but possibly a Puff Adder (Top two most poisonous, I think)
I'm not sure if this counts, but the animal that causes the most human deaths throughout Africa is the Malaria Mosquito. And while I have never had malaria, I've seen plenty of mosquitoes in Africa.