The Mongolianpopulation is estimated to consist of fewer than1,000 individuals, although few populationassessments have been conducted. This species isprimarily threatened by high levels of exploitation,but habitat degradation, disease and hybridizationalso constitute threats. As the population size is sosmall, Rangifer tarandus qualifi es as Vulnerableunder Criterion D1. The assessment remainsunchanged following application of regional criteria as there is no signifi cant immigrationfrom adjacent countries.