During a pirogue ride along the Nero River — an 80 km waterway nestled in the South-West of Côte d'Ivoire — you'll have the chance to spot some wonderfully amusing and strikingly beautiful animals. These are the white-nosed monkeys, also known as Pétauristes. They measure between forty (40) and fifty (50) cm in length, with a tail reaching up to seventy (70) centimetres.