Before you bite into that next burger, you may want to stop and think about the life of the cow that sits before you. Morbid? Maybe a little, but they deserve a little afterthought when you learn how emotionally deep they are.
According to research at Northampton University, cows have "best friends" and are distressed if they're separated. That's right, despite their calm exterior and completely "at peace" blank stare, they have some troubles too. In every herd there are aggressive cows that act out and push their way to the front when it's time to be milked, and submissive cows that try to stay out of the way.
The cow's heart rates and cortisol levels were measured when they were isolated, penned with their best friend, and penned with a stranger cow. The heart rates were significantly lower when they were with their friends, which could provide some real benefits.Milk yields will be higher and bettering their welfare by reducing the stress.