Mashco Puro is a Maipurean language spoken in Peru. It is also called Cujareño. It is very similar to the Piro, with an estimated 60% inherent intelligibility. Kaufman considered it a dialect of Piro; Aikhenvald suggests it may rather be a dialect of otherwise extinct Iñapari.Language documentation is limited, since the Mascho Piro are highly nomadic hunter-gatherers who actively avoid contact with outsiders.