Why can a horse be perfectly capable one day and struggle the next? Why does a horse that was once willing begin refusing, rushing, spooking, bucking or becoming harder to ride? And how do we work out whether we are dealing with pain, weakness, training, fear, the rider, the environment, or several things happening at once?
Why Horses Become Difficult offers a different way to understand these questions.
At the heart of the book is a simple distinction: there is a difference between a difficult horse and a horse that is finding something difficult. The Difficult Horse
Drawing on Dr Shelley Appleton’s experience with horses, training and human learning, the book introduces the concept of Functional Reserve, a practical way of thinking about what a horse has available, what the job is costing them, and how much they have left to cope when something else is added.
Rather than reducing difficult behaviour to a single explanation, the book helps you look at the whole horse. You will explore how physical capacity, conformation, fitness, pain and discomfort, training, learning, rider skill, environment, management, stress and recovery can interact to change what a horse can comfortably manage. The book also explores why simply proving that a horse can perform a task does not tell us how difficult that task may be for them. The Difficult Horse
Most importantly, this is not a book about protecting horses from every challenge. Horses develop capacity through appropriate training, exercise and experience. The goal is to become better at recognising the difference between useful challenge that develops the horse and demands that repeatedly leave the horse struggling. The Difficult Horse
Why Horses Become Difficult will help you look beyond labels, notice patterns earlier and ask better questions about the horse in front of you. Because when behaviour changes, the most useful question may not be “How do I stop this?” but “What has changed, and what is my horse finding difficult?”
Available for pre-order now as an eBook and audiobook.
Release Date 30 October 2026