Bori

The Bori is a creature from the myths of the Hausa people. They resemble headless men with goat legs and cloven hooves. They can shapeshift into any animal, often turning into snakes, but may also turn into monkeys, birds, or swarms of insects. They live in forests, and make cries for help and turns into a lost child to lure victims in. They drain some blood out of their victims leaving them without energy. Can be appeased with offerings of freshly killed fowl or bowls of fruit and then become helpful. They can also be controlled if someone learns their true name, but this control is broken if the Bori is burned. After being freed, the Bori will attack its former boss and their family. They cannot touch iron and can be stopped by weapons made of iron. 

Citations:

Maberry, Jonathan. Vampire Universe: The Dark World of Supernatural Beings That Haunt Us, Hunt Us, and Hunger for Us. United States, Kensington Publishing Corporation, 2006.