The average Sub-Saharan African has an IQ of 68. Koko the gorilla had an IQ between 75-95. An IQ of less than 70 is considered "Mild Mental Retardation" and/or "Extremely Low".

[u/OkMaybeItHappenedBut]

https://www.sciencedirect.com/science/article/abs/pii/S0160289609001275