Nottingham Trent University’s School of Animal, Rural and Environmental Sciences, Southwell discover horses are cleverer than we think

Equine scientists at Nottingham Trent University’s School of Animal, Rural and Environmental Sciences at Brackenhurst campus, Southwell wanted to understand more about the way in which horses learn as a way to train to them more humanely and improve their welfare.

The team developed a task whereby horses touched a piece of card with their nose in order to get a treat – but then gradually began to make the game more challenging.

In the next stage, horses would not receive a treat if they touched the card while a light was on, but would if they touched it while it was off.

The scientists are now saying that this shows a higher level of cognitive processing than was previously thought possible in the horses, as they were able to instantly switch strategies and behave differently when they saw there was a risk of something being taken away from them.

This approach requires the horse to think into the future, the researchers say, and is very goal directed, with horses required to focus on what they want to achieve and the steps they need to take to do this.

“At first we found that horses would just keep touching the card over and over, as they probably realised they would still get a frequent reward with minimal mental effort,” said lead researcher Dr Carrie Ijichi, “There was no cost for indiscriminate hitting, sometimes it paid off, sometimes it didn’t.

“When we introduced a cost for their errors, however, they could instantly understand and play the game properly.

“Horses are not natural geniuses, they are thought of as mediocre, but this study shows they’re not average and are in fact more cognitively advanced than we give them credit for.

“We now think that horses may be able to use a form of learning called ‘model-based learning’ which was thought to be too complex for them. This will now help us to understand their behaviour and capabilities much better.

“It’s fascinating because they have a very underdeveloped pre-frontal cortex which is what we typically credit with producing that type of thinking in humans. This means they must be using another area of the brain to achieve a similar result and this teaches us that we shouldn’t make assumptions about animal intelligence or sentience based on whether they are ‘built’ just like us.”

The study is published in the journal Applied Animal Behaviour Science.

Researcher Louise Evans, based in Nottingham Trent University’s School of Animal, Rural and Environmental Sciences, said: “We were expecting horses’ performance to improve when we introduced the time-out, but were surprised by how immediate and significant the improvement was.

“Animals usually need several repetitions of a task to gradually acquire new knowledge, whereas our horses immediately improved when we introduced a cost for errors. This suggests that the horses knew all along what the rules of the game were.”