A farm in Poland witnessed the birth of a mutant two-headed calf.

Local vet Karolina Szarowska was stunned as she described helping with the delivery in the village of Kowalewo Pomorskie.

After the unusual birth, Szarowska shared pictures of the newborn cow with two heads on social media.

She wrote: 'Two heads are better than on. To bring THIS out alive was a true miracle.'

According to the farmer however, the calf died shortly afterwards.

'It was the fourth birth of that cow and not the first one with problems — the first calf was born with his internal organs outside and died,' he said.

'I was really hoping it would survive but it died.'