Thai factory workers hammer pythons to death before they're pumped with water and skinned to make leather for Gucci and Louis Vuitton

Reptile farms in Thailand that supply leather to Gucci, Yves Saint Laurent, and Louis Vuitton kill snakes by hitting them in the head with hammers.

Video and photos from inside Closed-Cycle Breeding International and Si Satchanalai Python Farm show the disturbing ways reptiles were housed and slaughtered.

Workers put the python's head on a table and repeatedly whacked it with a hammer, a shocking method experts said may not even knock them out.

They then drove a metal hook through their head and pumped the snake full of water to make it easier to remove the skin.

Phokkathara Crocodile Farm, which supplies skins to Kering brands like Gucci and YVS, also killed its reptiles using shocking and painful methods.

Workers put the python's head on a table and repeatedly whacked it with a hammer, a shocking method experts said may not even knock them out

They then drove a metal hook through their head and pumped the snake full of water (pictured) to make it easier to remove the skin

The footage was obtained by undercover investigators from animals right group PETA, who spoke to farm owners and toured their facilities.

CCBI and Si Satchanalai, owned by a father and son, told the investigators they supplied leather to Caravel, a tannery owned by Kering, and to Louis Vuitton.

The massive CCBI farm had 15,000 pythons in captivity and killed 20 to 30 a day during busy seasons to fulfil a 5,000-skin contract with Caravel this year.

Snake skins are used to make bags, shoes, belts, and other accessories sold around the world by the luxury brands.

Pythons on the two farms were bred in captivity and housed in completely bare small cages and boxes, sometimes slithering in their own feces.

The owners said snakes sometimes killed each other during breeding season, when females were mated with three or four males.

They pointed out one emaciated snake that 'didn't eat for a long time' and said 'they should get rid of it… it's better to kill'.

Another snake hadn't shed properly and its molting scales were stuck in its eyes, which the owner said was also reason to kill and discard it.

Pythons on the two farms were bred in captivity and housed in completely bare small cages and boxes, sometimes slithering in their own feces

Snake skins are used to make bags, shoes, belts, and other accessories sold around the world by the luxury brands

A worker pumps a snake with water as skinned snakes are seen in boxes

The massive CCBI farm had 15,000 pythons in captivity and killed 20 to 30 a day during busy seasons to fulfil a 5,000-skin contract with Caravel this year

The owner said the snakes were chilled for a day before they were killed, but scientists are not convinced hypothermia significantly reduces their sensitivity.

Clifford Warwick, a reptile expert whom PETA showed the footage to, said it was likely the snakes were conscious during their painful deaths.

Many of the snakes kept moving during and even after the process that was supposed to kill them. 

Investigators also toured the crocodile farm, which supplied Caravel, and watched how workers tried to kill the animals with a 'nape stab' to sever their spinal cord.

PETA said the method 'likely caused extreme pain and a slow, agonizing death'.

'This animal's legs continued to move for at least 23 minutes after the worker violently thrust a metal blade into his or her neck,' it said.

'Scientific evaluation suggests that crocodiles may remain alive and conscious for over an hour and a half after sustaining such injuries.'

The farm's owner claimed to have 4,000 crocodiles on site, which were kept in murky pools filled with disease.

Metal hooks are driver through the pythons' heads so they can be skinned - but they may still be alive and conscious

Workers bash pythons on the head with hammers to stun or kill them

Investigators also toured the crocodile farm, which supplied Caravel, and watched how workers tried to kill the animals with a 'nape stab' to sever their spinal cord

An invoice between Closed-Cycle Breeding International and Caravel

Kering lists Caraveli Pelli Pregiate SpA, the legal name for the Caravel tannery, as a fully owned entity. It bought a majority stake in the company in 2001 and acquired the rest in 2008.

Kering's animal welfare standards state animals must have 'room to move around freely' and be 'managed to promote good health and treated immediately should disease or injury be discovered'.

They also require 'humane handling at end of life'.

Kering helped start the Python Conservation Partnership in 2013, which focuses on 'improving sustainability, transparency, animal welfare and local livelihoods for the python skin trade'.

PETA claimed its investigation showed these standards were not being followed. 

About 500,000 snake skins are legally imported into Europe from Southeast Asia every year, according to a 2017 report. 

Kering and Louis Vuitton parent company LVMH were contacted for comment.