PETA is fighting back against an online retailer that created a controversial Cecil the Lion Killer costume, complete with a severed head, by releasing its own gory Halloween ensemble entitled "Cecil's Revenge".

Instead of the costume featuring the dentist holding a decapitated lion's head, like the original version, PETA’s option turns the tables and instead sees the lion attacking the medical professional. The graphic costume features fake blood spattered all over the dentist’s white coat, while a stuffed lion bites into the wearer’s shoulder

The outfit retails for $139.99 and is in direct retaliation to a similar, 'sickening', Halloween ensemble, sold by Costumeish.com, which retails for $59.99.

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Cecil's Revenge! PETA have released a Halloween costume that sees cecil's killing by Minnesota dentist Dr Walter Palmer, avenged. It is for sale for $139.99 with profits going to PETA

Original idea: An online costume retailer created Lion Killer Dentist Halloween Costume, complete with a lion's severed head and dentist smock covered with fake blood splatters

Much like the original, PETA’s version also sees the wearer stepping into the shoes of Dr. Palmer, who illegally shot and killed the celebrity lion during an African safari trip.

The costume even comes complete with a name tag that reads, 'Dr. Palmer'.

'Customers can 'turn the table on trophy hunters' ghoulish pastime with this cheeky new limited-edition costume,' the product description reads.

The main feature of the costume, of course, is the plush lion attached to the dentist scrubs.

The animal, which is intended to represent Cecil, avenges his own death by clawing and biting into the Dr. Palmer outfit.

Costumeish's 'Lion Killer Dentist Halloween Costume' retails for $59.99. PETAs is $139.99 which shows the lion attacking the denstist. The 13-year-old beloved lion, Cecil, was killed in early July by Minnesota dentist Walter Palmer (right), unleashing global outrage

Customers can even add to the effect by accessorizing with their own toothbrush, dental drill or bow and arrow.

'As animals continue to die in agony at the hands of trophy hunters, it's only fitting for people to make fun of Dr. Palmer for his illegal, violent pursuit,' PETA's president Ingrid Newkirk said in a news release.

Newkirk approves of that costume even though it depicts Dr. Palmer killing Cecil.

'Nasty little people try to make themselves feel good by killing wild animals who are minding their own business, so we at PETA think it most fitting that people make fun of the dentist for his sick, illegal pursuit by fashioning a hideous Halloween costume after him, as they would after Freddy Krueger or Jason,' she told the Huffington Post.

All profits from merchandise sales will go directly to support PETA's lifesaving work for animals.

Lion populations are rapidly declining in Africa. PETA—whose motto reads, in part, that 'animals are not ours to abuse in any way'—encourages caring people to implore federal authorities to issue an order listing lions as 'threatened' and ban the importation of their heads, tails, and skins in order to stop lion-trophy imports into the United States.

Last week, Dr Palmer reopened his Minnesota dentists practice six weeks after going into hiding.

He was also spotted for the first time in almost two months walking through the neighbourhood wearing a red t-shirt and blue jeans.

In a statement released by the practice, a spokesman said: 'We are dental professionals committed to serve our patients and clients. Our office is private property, and we ask the press to stay off of the property and respect the peace of mind of our patients and clients.

'River Bluff Dental is a private business. The employees and patients wish to get back to business as usual to serve our clients and patients, and maintain the jobs of dedicated professionals.'

'All Doctor Palmer wanted was to hang dead animals in his house, but what started as an obscure (if legally-dubious) hunting trip has since erupted into a brouhaha of trans-Atlantic proportions,' the description of the costume reads on the retailer's site

Cecil, shown with his offspring, had an intriguing story, making him a celebrity in Hwange National Park

The killing of the 13-year-old beloved lion in early July unleashed global outrage, sending Minnesota dentist Dr. Palmer into hiding back home in suburban Minneapolis, leading to the arrest of the local hunter he employed and prompting Zimbabwe's environment minister to say the southern African country would seek Palmer's extradition to face charges.

Dr. Palmer used a bow and a gun to kill the now-famous lion - with the bushy black mane, its head and skin eventually cut off as trophies.

Cecil had an intriguing story, making him a celebrity in Hwange National Park. He arrived as a kind of lion refugee, alone and wandering after being displaced from another territory.

The lion befriended another male lion, Jericho, and together they grew and watched over two prides, one with three lionesses and seven cubs and another with three lionesses.

'The threat of extinction is very real for African lions,' African Wildlife Foundation Senior Director of Conservation Science, Dr. Philip Muruthi, said on the foundation's website.