One of my favorite things about going to Africa is hearing
the night sounds. After my last trip, I found some of them
on the web. If you want to hear them check these out:
There are frogs that I think sound like bubbles being blown,
so I call them bubble frogs. Then there are frogs that I
think sound like glass balls tinkling against each other.
I hear these nearly every trip and didn't know their name
so I call them tinkley frogs.
This site has a wide array of African mammal sounds and this
one also has mammals. You can often hear lion and zebra at
night, or hyena. Once I heard leopards calling all night,
that was very cool.
Frogs can be hard to identify; this site has a whole array of
them and an index.