Evelyn E. Smith 
Nightmare on the Nose [EPUB ebook] 

The gifting of animals with human speech is scarcely an unique idea; the idea of a talking horse goes back at least to the siege of Troy, for certainly there must have been some dialogue amongst the Greek warriors enclosed in the wooden horse’s belly. But we think you’ll agree that Miss Smith’s filly has something special. Incubus won every race but one. Yet though in this respect she matched Man o’ War’s record she wasn’t actually a horse at all.