Of these only two are endemic to the country: Gonionotophis egbensis, a file snake, and Tricheilostoma greenwelli, a threadsnake.
[1] Venomous species occurring in Nigeria are in the families Viperidae, Elapidae, and Atractaspidinae.
Atractaspidinae are a family of small, inoffensive snakes with low chances of envenoming.
Native examples include mole vipers, stiletto snakes, and burrowing asps.
Most cases of envenomation are caused by the West African carpet viper, the black-necked spitting cobra, and the puff adder.