Simpson tried riding Lilac with a saddle once, but that did not work out well. So they ride bareback with a halter and stick to prod Lilac along when needed.

Simpson, who works on a dairy farm, said she has tried riding other cows, however, without much success.

While Simpson got a horse two years ago, she still rides Lilac.

"I don't think she would behave if we took her anywhere but home. And I don't need to compete. She is more special than a horse, more rare."