Animal rights organisation People for the Ethical Treatment of Animals (Peta) has blasted a bizarre Czech calendar featuring a topless model decapitating a pig.

A Peta spokesperson branded the controversial calendar "slaughter porn", according to www.metro.co.uk.

"Only a sociopath could find sexual excitement from the depiction of horrific and violent acts against frightened living beings," the spokesperson said.

"Such imagery is likely to get the public to consider that real pigs used for meat are sensitive beings who suffer violent, bloody deaths and who do not want to die."

Another image features a model standing over what appears to be a dead pig in a trough, while chickens drink from pools of blood on the ground.

The model featured in one of the photos is a former Miss Czech Republic by the name of Diana Kobzanova. The 27-year-old former beauty contest winner is pictured wearing stilettos while wielding an axe in the direction of a pig.

Following Peta's condemnation, Kobzanova has defended the calendar, revealing that the animals pictured in the photographs were in fact models built for the occasion.

"All the proceeds from the calendar will go to the Helpers Association, which trains guide dogs for the blind and the physically handicapped," she said.