Many birds and some antelopes, notably the dik-dik and the saiga , sport noses that give them an exceptional ability to regulate brain temperature and conserve water.
The saiga is an unusual-looking type of antelope.
Other creatures, such as the antelope-like saiga of Central Asia and certain kinds of desert hares, have filtering tissues surrounding their respiratory tracts that give them the same adaptive advantage.
And in just 10 years, hunters in Asia have killed hundreds of thousands of saiga , an Asian antelope, pushing the species to the brink of extinction.
Among those added to the list is the saiga , a nomadic antelope inhabiting the steppes and semi-arid deserts of central Asia.
Conservationists point out that the rise of the Soviet Union in the early 20th century and a strict ban imposed on hunting allowed the saiga antelope to recover from a similar population crash during the 19th century.
Reserves were created to save critical habitat for endangered species such as the Siberian tiger, saiga antelope , Russian desman and black stork.
Further paleoecological evidence for a lack of permafrost comes from the existence of some animals with small hooves, such as the saiga antelope .
Milner-Gulland and colleagues from Russia and Kazakhstan published a report on the reproductive collapse of the saiga antelope in the March 13 issue of the journal Nature.