The M'kuoo M'bemboo is a dinosaur or reptilian creature found in west Cameroon, in Africa.              

Rendering of a Moeritherium, an extinct aquatic mammal of North and West Africa

Reported only once, it is apparently known to the local peoples, who named it. Despite the similar-sounding names, this is not just another local name for the Mokele Mbembe. The creatures are drastically different.              

The herbivorous creature is beyond massive, with a head alone that is described as the size of a full grown hippopotamus. It has a 'gurgling' roar, is described as shiny black. The head is compared to that of a seal, but 'flattened from above to below'. It appears to be at least semi-aquatic, as the one report described it exiting an aquatic cave and lunging out of the water.

Supposedly, it attacks hippos, but it does not eat them. This would explain why no hippos live in the region.

It could be possible that a Herbivorous species of Marine reptile or mammal found itself with in the African Cameroon or more likely a seal or even a large Crocodile. It can also possibly yet unlikely be an extinct Pyrotherium or Moeritherium that somehow survived for 66 million years or shorter in Cameroon.

Appearance: A human-sized bird with a woman's face

Lore: Lechuza are women who have sold their souls to the devil in exchange for magical powers. At night, they transform into monsters with a bird's body and a woman's face, similar to depictions of harpies in Greek mythology. They then fly through the night in search of prey.

When a Lechuza finds her target she will perch in a location where she can't easily be seen and then will make either strange whistles or the sound of an infant crying. Anyone who attempts to determine where the sound is coming from is at risk of becoming Lechuza's dinner. Lechuza will then swoop down and carry off the confused and horrified individual.

In some versions of the story, the Lechuza is the spirit of a witch who was murdered by locals. Her spirit returns in the form of the bird-monster to get revenge. In other tales, the Lechuza is the vengeful spirit of a woman who has returned from the grave to torment the living and to seek revenge.

In modern times, most reported run-ins with the witch-bird involve her swooping down at cars driving deserted roads at night.

Powers: As a witch, Lechuza possesses supernatural powers. One of the powers of the Lechuza is to summon storms. Sightings of Lechuza are believed to coincide with thunderstorms. Lechuza possess the power to shape-shift into bird-monsters at night. Lechuza also possess the ability to disguise their voices to appear as if it is the cries of an infant in order to draw it's human prey closer. Finally, it is believed that hearing the cry of the Lechuza is an omen that someone in the household will die, a trait more commonly found in tales of the banshee. Lechuza are immune to weapons and bullets and possibly are immortal.

Defense Against Lechuza: Lechuza fear salt. Upon hearing the call of a Lechuza one should immediately began cussing her out. Doing so will drive her away. Don't go outside to investigate hearing a strange whistle sound or the sound of a baby crying.

Info from cryptid wiki