Deep in the heart of the forests of the Congo, there are those that believe, lives a large animal. Said to be larger than an elephant and having a long neck. It's descriptions are closest to that of the long extinct Sauropods, Mokele-Mbembe (One that blocks Rivers) is said to dwell within the swamplands and is said to thrive within the rivers and trees.
Next cryptid creature I decided to go for the elusive Mokele-Mbembe, the aledged modern day dinosaur with a tongue twister of a name! Pronounced (according to the internet) "Mock-Ellie Mm-Bem-Bee."