"We have many different kinds of animal heads.
"Here we have the head of a crocodile, the head of a cat and lots of monkey heads. We also have different birds like vultures and owls, as well as chameleons, snakes, cobras and vipers.
"To make the medicine, we grind up the heads with herbs and then put the mixture on the fire. This leaves us with a black powder.
"We cut the person's chest or back three times and then rub the powder into the flesh."