This is the gruesome moment a wild python regurgitated an endangered deer calf in Cambodia.

The large 8ft-long serpent with a bulging stomach began spitting out its latest meal when locals passed by its nest, but the men were even more shocked when they realised it had killed what they believed to be an Eld's deer, which are seriously at risk of extinction.

Footage shows the snake twitching as it pushed inch by inch the dead animal out of its mouth at a farm near an ecological sanctuary on October 14.

The Eld's dear had already been partially digested when it came out of the python before residents turned them over to wildlife officials following the incident in Kandal province, on the outskirts of Phnom Penh.

Eld's deer are listed as Endangered on the IUCN Red List of Threatened Species. Their population has declined by more than 50 per cent over the past 15 years, and there are now fewer than 1,500 individuals remaining in the wild.