Deep in the jungles of Thailand a military exercise is taking place which sees participants drink the blood of freshly killed cobras.
The jungle survival program is part of an annual event known as Cobra Gold 2013.
It focuses on maintaining and improving military relationships among nations in the Asia-Pacific region, including the US, Thailand, Singapore, Indonesia, Japan, South Korea and Malaysia.
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US Army Sergeant Daniel A Hernandez told military website Dvidshub.net the drills were necessary for soldiers to survive in the jungle.
He said: “Drinking contaminated water could result in life-threatening problems in the jungle. If there’s no water, drinking blood could be used, but as a last resort.”
The 13,000 combined personnel were also trained in hunting insects and animals and how to identify poisonous plants.