WARNING, GRAPHIC CONTENT: The sickening video appears to show two wide-eyed inmates biting the heads off rodents as a crowd of prisoners cheer them on
A prisoner reportedly high on a 'zombie' drug licks a live mouse before biting its head off in this horrendous footage.
The crowd shouts and jeers as two wide-eyed inmates in US prison-issue uniforms hold the rodents up to the camera.
American websites that have posted the clip claim the men had been smoking flakka just before taking part in the sickening challenge.
Flakka is a drug similar to bath salts and causes hallucinations and psychosis, and last year it was linked to cannibalistic attacks in Florida.