Ryan Gosling is asking dairy farming officials to put a stop to cruel calf mutilations known as "dehorning."

On behalf of People for the Ethical Treatment of Animals (PETA), the actor wrote a letter to Jerry Kozak, the President of the National Milk Producers Federation, urging him to introduce a ban on the painful practice.

Gosling wrote: "I was shocked to learn from my friends at PETA about a practice in the dairy industry called 'dehorning,' which involves painfully burning horn tissue or gouging cows' horns out of their heads, often without the use of any painkillers. I respectfully urge the National Milk Producers Federation to take the lead in stopping this barbaric practice by requiring farmers to phase out dehorning by breeding for polled, or naturally hornless, cattle...
"The American Veterinary Medical Association, the U.S. Department of Agriculture, and third-party animal welfare auditing groups recognize the benefits of polled genetics for the dairy industry, so there is absolutely no reason - and no excuse - for the cruel, unnecessary practice of dehorning to continue. Please do the right thing and take action today."

Casey Affleck is also standing up for animal rights by serving as a narrator of PETA film exposing the cruelty of dehorning.