The dzud has killed more than 2.7 million animals, nearly a tenth of the national total. (Photo: Andrew Cullen)

Four-month-old Bulgan-Erdene gets a check up from Dr. Battulag. (Photo: Andrew Cullen)

Local officials and UNICEF workers visit a student dormitory in Uyench soum. (Photo: Andrew Cullen)

Tenth grade students help unload a truck of UNICEF aid at the student dormitory in Uyench soum. (Photo: Andrew Cullen)

Children line up to receive books and other aid items from UNICEF at the student dormitory. (Photo: Andrew Cullen)

Men struggle through thigh-deep snow to reach a vehicle passing through the Bayangol sub-district. (Photo: Andrew Cullen)

Cows in Bulgan soum's Shuudai area eat tree bark and branches to survive during Mongolia's dzud. (Photo: Andrew Cullen)

UNICEF worker Tsendsuren (left) instructs employees at a school in Bulgan Soum how to distribute aid. (Photo: Andrew Cullen)

Ganbold protects his ears from the cold as he releases his family's goats and sheep for the day. (Photo: Andrew Cullen)

With nothing else available, horses eat tree bark to survive during the harshest dzud in 30 years. (Photo: Andrew Cullen)

Orlom feeds a newborn goat kid black tea with sugar to supplement its mother's meager milk supply. (Photo: Andrew Cullen)

Men help push a Russian made jeep out of deep snow. (Photo: Andrew Cullen)

A village doctor makes a house call in the Bayangol sub-district. These gers are deep in the countryside. (Photo: Andrew Cullen)

Balkhan has lost all but a dozen or so of his 80-animal herd this winter. (Photo: Andrew Cullen)

Their herd decimated by the dzud, Balkhan's family often eats nothing but bread and tea for dinner. (Photo: Andrew Cullen)