But why pass a flame under a cow in the first place?
"Hair on udders allows more bacterial growth, which make them harder to clean," Susie Coston, national shelter director of Farm Sanctuary, told The Dodo, adding that the practice is used to prevent mastitis, an infection that can arise in any nursing mammal, even humans.
If done correctly, you do not burn the cow, Coston said. But there's still something chilling about the practice.
"Burning [the hair] off is a quicker, cheaper and easier way to do something that is not about the cow, but about our need to have her produce too much milk, [and] be milked continuously using machines," Coston explained. "Cows producing 50 to 100 pounds of milk is the problem. So we created something unnatural and continue to need to find ways to make that unnatural thing work for us."