Burning fires, raising cooking rations, and using high-voltage lamps are several measures applied at the Hanoi Zoo to protect animals in the current cold, which began on January 2.

In cold weather the Hanoi Zoo is quiet.

Animals also seek ways to combat cold. Instead of jumping up and down, these monkeys lean on each other to keep warm.

Spotted deer are warmed by fires. Veterinary doctor Pham Van Tuan said the zoo has to keep

animals warm whenever the temperature is below 15 degree Celsius.

Food rations for animals are also increased.

Deer graze near the fire.

Many baby deer stoop near the fire.

The house for elephants is covered by canvas. Fires are also burnt.

Tigers are warmed by lamps of up to 2,500W.

Birds, chickens, peacocks are also protected from chill.

Only hippopotamus soak their bodies under water. Workers pump warm water of 30-35 degree Celsius into the lake.

Kien Trung