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Behaviour problems · 10 September 2026

Horse Won't Load Into the Trailer: Why It Happens and How to Fix It

A horse that won't load into a trailer is not being stubborn. To him the trailer is a dark, narrow box that rattles and moves. For an animal that survives by running away, walking into that space contradicts every instinct he has. So the first step is never to pull harder, but to understand what the horse feels.

In the K3P approach I start with communication. Before the trailer I check the basics: does the horse move off my energy, does he stop when I stop, does he yield his hindquarters when I ask. If that does not work in an open field, it will not work at the ramp. The trailer only exposes gaps that were already there.

Then I build trust in small steps. The horse approaches the ramp, stops, rests, and walks away again. The reward is not food, it is the release of pressure and a moment of calm. Every time he shows the smallest willingness, I release. That way he learns that coming closer brings relief, not a fight.

The most common mistake is rushing. The owner has an appointment, a vet visit or a show, and the session turns into a tug of war. The horse remembers the fear and next time it is worse. It is better to lose two quiet afternoons than a whole year fighting the ramp.

Practical advice: practise when you do not need to go anywhere. Leave the trailer open in a familiar place, feed near it, let the horse investigate on his own. When he steps in, do not close anything. Let him back out. Loading and unloading must both be calm.

Once the trailer becomes just another place where nothing bad happens, loading stops being an issue.

By Tomislav Marčenić, horse trainer and instructor from Pušća near Zaprešić.