- Other names: Ing'ondotuya , Lengolengole, Lingongole
- Country reported: Zambia
Isiququmadevu is a Lozi word.
At 20 to 40 feet long, the isiququmadevu is described as being much larger than an elephant, with a snake's head on a long neck, and lizard-like legs. It is amphibious and dwells in swamps and rivers.
In the early 20th Century, King of Barotseland Lewanika was shown to a spot where a huge aquatic reptile had been seen, and saw a large space where the reeds had been flattened and a channel as large as a trek-wagon had been made in the mud.
In 1925 a river transport manager named V. Pare saw a 30 to 40 foot snakelike animal with a slate-grey head resting on a rock in the Zambesi near Victoria Falls. It disappeared into a deep cave.
E. C. Saunders saw two long-necked animals in the Zambesi in January 1960. He estimated that they were between 20 and 25 feet long, and wrote that they did not look like pythons.
Bernard Heuvelmans speculated that an outsized African clawless otter could have been behind the 1925 sighting, whilst George Eberhart writes that two rock pythons in coitus could explain Saunders' sighting.