The soko brings forth at times twins.

A very large soko was seen by Mohamad's hunters sitting picking his nails; they tried to stalk him, but he vanished.
Some Manyuema think that their buried dead rise as sokos, and one was killed with holes in his ears, as if he had been a man.

He is very strong and fears guns but not spears: he never catches women.
Sokos collect together, and make a drumming noise, some say with hollow trees, then burst forth into loud yells which are well imitated by the natives' embryotic music.

If a man has no spear the soko goes away satisfied, but if wounded he seizes the wrist, lops off the fingers, and spits them out, slaps the cheeks of his victim, and bites without breaking the skin: he draws out a spear (but never uses it), and takes some leaves and stuffs them into his wound to staunch the blood; he does not wish an encounter with an armed man.

He sees women do him no harm, and never molests them; a man without a spear is nearly safe from him.
They beat hollow trees as drums with hands, and then scream as music to it; when men hear them, they go to the sokos; but sokos never go to men with hostility.