A MAN has been caught having sex with cows while his mate filmed him.

The pair were arrested after a farmer installed surveillance cameras at his Herkimer County, New York State property when his livestock started behaving strangely.

The farmer, who has not been named, became concerned when his cows started acting “nervously” around him and producing less milk, UticaOD.com reported.

The reason for the animals’ odd behaviour became apparent when the farmer reviewed overnight footage.

To his horror, he found he had recorded at least one man fornicating with his cows as another wielded a video camera.

Michael Jones, 35, and Reid Fontaine, 31, have since been arrested on charges of misdemeanour sexual misconduct.

Fontaine is accused of having intercourse with multiple cows while Jones filmed him.

The men were bailed to appear in court at a date yet to be set.