The Strawberry Roan by Darragh Metzger
Approx. 164,050 words.
Published on August 20, 2011.
Black Bess can whip King Kong with a willow switch. She can chew up railroad ties and spit out nails. But she can’t figure out how to turn the scrawny, funny-looking, strawberry roan colt into a proper stock-wrangling, plow-pulling, cow-punching Rover’s horse. Whoever heard of a horse with a horn, anyway? Why do strange things happen when he’s around? And why would anyone kill for him?