Only 8,000 remain of the most vulnerable chimpanzee subspecies, the Pan troglodytes vellerosus, which is found predominantly in Nigeria, and it could be extinct in two decades, according to a new ...

Colin Groves of the Australian National University in Canberra believes that Pan troglodytes marungensis should join the four already recognised subspecies. “The data and the arguments are ...

Consistent with previous findings 1, 40 of 323 specimens from P. t. troglodytes, but none of 55 samples from P. t. vellerosus, contained antibodies reactive against HIV-1 (for details, see ...