A walrus-like creature in the heart of Africa? Such is the description of the dingonek by John Alfred Jordan, an explorer who actually shot at this unidentified monster in the River Maggori in Kenya in 1907. Jordan claimed this scale-covered creature was a big as 18 feet long and had reptilian claws, a spotted back, long tail, and a big head out of which grew large, curved, walrus-like tusks.
Natives of the area further described it as having a scorpion-like tail and reported that it would kill any hippos, crocodiles, or human fisherman that dared encroach on its territory.
This sounds like a fantasy creature, but consider this: At the Brackfontein Ridge in South Africa is a cave painting of an unknown creature that fits the description of the dingonek, right down to its walrus-like tusks. [top]
http://paranormal.about.com/od/othercreatures/a/aa031008_2.htm
Heuvelmans on the other hand says that it might be a type of water-loving, surviving Sabertoothed catparts of central Africa:
At the same time the creature has also been suggested to be a kind of large African otter, a tt of an otter, whereas thewe know as fossils have noticeably short, bobbed-off tails. The story that it has a sting in the tail is also seen in South American "Water Tiger" storiesn told falsely of actual tigers in other places!) but the original idea seems to be borrowed from stingrays, which do indeed have a sting in the tail. Apart from that, we seem to have another instance of the "Southern Walrus" on South African shores (below). And I can vouch for the rock art wanting to show "Viper Fangs" instead of really walrus tusks, the only problem being that the artist wanted to show a wide-open, strikinging mouth, and the lower jaw is simply hard to make out lying against the animal's "Chest"