SICKENING new footage has emerged of brute wool workers telling terrified sheep "I'll slit your f****** throat" while others lie in pools of blood after rough shearing.

Farm workers have been caught on camera punching ewes in the face, slamming their heads to the floor and pinning them to the ground by the throat while screaming vile abuse.

Several workers were also captured throwing and dragging near-dead animals round by the legs like rag dolls.

Lifting the lid on the harrowing reality of the wool industry, animal rights group PETA Asia has now released extended footage to show the true suffering faced by Scotland's sheep.

The charity's senior vice president Jason Baker said: "This new footage makes it clear that the cruelty we've captured on video is far from an anomaly, as the industry would like everyone to believe.

"It shows how shearing operations treat animals – something every shopper has a right to know.

"When animals are viewed as commodities and their fear and pain are ignored, we must raise our voices and use our consumer clout to stop."

PETA Asia has submitted a 12-page formal complaint and evidence to the Scottish SPCA after an eyewitness documented the horrifying scenes.

Their 8-minute clip, which many will find difficult to watch, shows some animals lying close to death being dragged away "like garbage".

Others are left with gaping wounds from rushed and violent shearing, which workers stitch up using a needle and thread - without pain relief.

The clip also shows how one of the sheep is unable to stand as it suffers from mastitis, and a worker explains that she will be shot.

The footage highlights just some of the cruelty observed at 24 sheep farms toured by shearers from a shearing contractor earlier this year.

PETA Asia say shearers are paid by volume, not by the hour, which encourages fast, aggressive treatment.

The group has asked the Scottish SPCA to launch an investigation and, if appropriate, file criminal charges against the workers for apparent violations of laws prohibiting cruelty to animals.

In August, PETA Asia released the first-ever video exposé of cruelty within the English wool industry, showing similar abuse.

Mr Baker added: "After exposing cruelty within the English wool industry, we've found the same horrifying abuse of sheep at farms in Scotland.

"Everywhere that eyewitnesses from PETA Asia and its affiliates go – from Australia and the US to South America and now the United Kingdom – they see the same disturbing behaviour."

"The production of all wool – no matter where it originated or what 'ethical' or 'responsibly sourced' claims are made on its label – spells extreme suffering and death for millions of gentle sheep and lambs."

PETA Asia – whose motto reads, in part, that "animals are not ours to wear" – encourages consumers to choose materials that are not produced through appalling abuse.

Scottish SPCA Chief Superintendent Mike Flynn said: "We can confirm we have received reports of alleged abuse within wool farms in Scotland.

"Our investigations are currently ongoing."