We were fortunate to be able to visit Kenya before the world went completely nuts. There were only three times I was nervous while there. The first was on our way to Samburu and groups of Somali immigrants were (lightly) harassing the tourists in the Land Cruisers. The second was in Samburu National Park where we saw a female leopard dragging her gerenuk breakfast through a gully while being stalked by a solitary hyena. She would occasionally stop and glare at all the chattering tourists.
The worst was while taking a short tour of Lake Naivasha by boat. We got a little too close to one hippo for my tastes. This picture was taken right before it dove to chase us off.
Fortunately the guy running the boat recognized the signs and had scooted us out of the way when it came back up.