We have drawn on the work of all these authors over the years and are grateful for their wisdom.   
It also comprises our suggested reading list for further exploration.

Affective Neuroscience: The Foundations of Human and Animal Emotions (Series in Affective Science) by Jaak Panksepp | 30 Sep 2004

The Archaeology of Mind: Neuroevolutionary Origins of Human Emotion (Norton Series on Interpersonal Neurobiology) by Jaak Panksepp and Lucy Biven | 11 Sep 2012

Horses in Company by Lucy Rees | 28 Sep 2017

The Horse’s Mind by Lucy Rees | 2 May 1991

Behave: The Biology of Humans at Our Best and Worst by Robert M Sapolsky | 5 Apr 2018

Anxious: Using the Brain to Understand and Treat Fear and Anxiety by Joseph LeDoux | 12 Jul 2016

Equine Welfare (illustrated edition) by Marthe Kiley-Worthington | 22 May 1998

The Behaviour of Horses: In Relation to Management and Training by Marthe Kiley-Worthington | 1 Aug 1999

The Horse Behaviour Handbook by Abigail Hogg | 26 Oct 2003

Ride from Within: Use Tai Chi Principles to Awaken Your Natural Balance and Rhythm by James Shaw | 1 Aug 2005

Posture and Performance: Principles of Training Horses from the Anatomical Perspective by Gillian Higgins and Stephanie Martin | 16 Oct 2015

You Can Train Your Horse to Do Anything!: On Target Training Clicker Training and Beyond by Shawna Karrasch | 17 Dec 2012

Enlightened Equitation: Riding in True Harmony with Your Horse by Heather Moffett l 26 Sep 2011 

Language Signs and Calming Signals of Horses: Recognition and Application by Rachaël Draaisma | 1 Sep 2017

Reaching the Animal Mind: Clicker Training and What It Teaches Us about All Animals by Karen Pryor | 1 Jul 2010

Mama’s Last Hug: Animal Emotions and What They Teach Us about Ourselves by Frans de Waal | 14 Mar 2019

The Age of Empathy: Nature’s Lessons for a Kinder Society by Frans De Waal | 15 Sep 2011

The Equid Ethogram: A practical field guide to horse behaviour. by Sue McDonnell | 23 Dec 2002

Twisted Truths of Modern Dressage: A Search for a Classical Alternative by Philippe Karl | 1 Jan 2008

Wild Horses of the Great Basin: Social Competition and Population Size (Wildlife Behaviour & Ecology S.) by Joel Berger | 1 Mar 1986