This is an excerpt from the Oprah magazine article: Portia De Rossi's Aha Moment - Becoming A Vegan.
The property was beautiful, with plenty of land for our animals: We had four cows and two calves, and after a few months, we took in a 4-year-old Canadian Warmblood mare named Diva. The night she arrived, I was so worried about her that I couldn't sleep. She had been hauled several hours to our farm, and I feared she might have colic. So at 5 o'clock in the morning, I went out to the pasture to keep an eye on her. I sat very still, watching her until sunrise. Everything was so quiet that I think the animals forgot I was there. Then I witnessed something extraordinary: The cows formed a single-file line, and one by one they touched noses with the new horse as a greeting. The calves wouldn't approach on their own, so one of the cows nudged them forward. Each of the babies touched the horse's nose, then jumped around and played like little children.