CROSS-RIVER GORILLA (CRG) – Extinction Realities by Akintayo Ololade

Scientific name: Gorilla gorilla diehli (Matschic 1904)

IUCN Status: Critically Endangered.

Population: About 200-300 spp in the wild (

Environment: Cross-river watershed (Nigeria), Bioko Island and Cameroon Island)

Cross River Gorilla


The species was named after a German employee of northwestern Cameroon Company, by Paul Matschic in 1904 (Etiendem et al., 2012). CRG prefers to avoid human contact and it was reported to inhibit a rugged dense territory ( CRG has an IQ of 75-95 in comparison to 85-115 IQ of humans, making it an intelligent animal (BBC). CRG are Herbivores but feed on termites or his larvae and ants occasionally. CRG engages in Coprophagia (eat their own feces) Etiendem (et al., 2012).


CRG does not swim and she was reported to dislike rain (, and the strength of the spp has being attributed to his ability to digest (45-70) % cellulose (Karasov and Douglas, 2013). The Spp. was reported to be (4-9) times stronger than average Man (, please do not attempt to stares directly in CRG eye directly, as such is an act of confrontation which may lead to an attack.

Both males and females of CRG beat their chest and this could be heard about 2km away (, this is done as a sign of warning to invaders, to exercise dominance or relieve stress. CRG was reported to have a speed of (20-25) mph, faster in speed to an average human. Usain bolt was said to record 23mph and a peak of 27mph in his 100m record (Quora). Leopards are reported to be a natural predator of CRG ( Apes are alleged to have the same blood types as humans (A, B, AB, and O) according to (


Treat to CRG includes poaching, habitat degradation, disease, government neglect and inadequate orientation of Locals.


Foremost, Gorilla plays a vital role in the ecosystem, they feed on a large volume of vegetation, and thereby creating home for others to live, hence, a loss of CRG will potentially affect other organisms they share habitat with, additionally, Gorillas are human nearest evolutionary spp, as they share 98% of human DNA.

Can we live in a world without this spp? Will the next generation not be disappointed if such a magnificent creature is lost?   

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Karasov, W.H. and Douglas, A.E. (2013). Comparative Digestive Physiology, Comprehensive Physiology. 3(2): 741-783. doi:10.1002/cphy.c110054

Etiendem, D.N., Neba, F.G., Nikki, T., Luc, H. and Eni, K.I. (2012). The Cross River Gorilla (Gorilla gorilla diehli) at Mawambi Hills, South-West Cameroon: Habitat Suitability and Vulnerability to Anthropogenic Disturbance, Folia Primatologica, doi: 10.1159/000345853