Following the launch of an online campaign aimed at raising awareness of animal cruelty in Spain's fur industry, a number of fashion brands have moved to defend their position.

The campaign - EndFashionCruelty.org - was launched by LCA and Animal Equality last week, and follows a two-year investigation of 70 rabbit fur farms in Spain highlighting the cruelty involved in the fur trade.

Videos and images on the EndFashionCruelty.org website show rabbits being mistreated, with investigators claiming the animals were confined to small cages and farm workers "callously bash[ing] sick rabbits to death".

A number of fashion labels were named as clients of the distributors, including Burberry, Marc Jacobs, and Yves Saint Laurent. It calls on them to play their part in "working to stop the savageness".

"As you read this, millions of animals are suffering so that the clothing industry may sell coats, boots and other garments made from their fur. Some of the worst cruelty occurs on rabbit farms in Catalonia, Spain - and their furs wind up at major retailers across the US," the campaign notice reads.

"We're working to stop the savageness, but we need your help to do it."

In a statement, Burberry emphasised it has no relationship with the farms featured.

"Burberry sources all natural raw materials very carefully in our efforts to safeguard the correct ethical standards in line with our ethical trading policy. Burberry will not use fur if there is concern that its production has involved the unacceptable treatment of animals," a spokesperson said.

A spokesperson for Saint Laurent told UK Vogue this week that it had undertaken its own internal investigations based on the report.

"We can confirm that Saint Laurent is not connected in any way, either directly or indirectly, to [distributor] Curticub. Saint Laurent teams are continuously working to find ways to ensure high standards of animal welfare. In line with its sustainability commitment, Saint Laurent has developed specific 'fur guidelines' which are systematically distributed to direct suppliers."

The campaign is one of several launched by organisations, including animal rights group PETA, whose spokesperson said: "Investigation after investigation of fur farms across the world all reveals the same thing - that animals suffer at the hands of a violent and bloody industry.

"Compassionate consumers know that there is no such thing as humane fur, which is why 95% of Brits refuse to wear it and why designers with a conscience refuse to work with it."

Marc Jacobs, Diane von Furstenberg, Louis Vuitton and Giorgio Armani did not respond to requests for comment.