"Pfizer manufacturing facilities operate to high environmental standards and are regulated and licensed by health authorities and environmental agencies to protect human health and the environment," a company spokesperson said in a statement.

The report, however, claimed that to the surprise of hundreds of shepherds, the animals behaved very strangely and were sexually overactive, according to a worldnewsdailyreport.

During an interview with RTE One, Michael Murphy, a shepherd, described his animals as "behaving like sex maniacs".

Pfizer said that its facilities all have environmental licenses that strictly regulate air emissions and water discharges in accordance with Irish environmental law as enforced by the EPA.