Reports from the world of equine science
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Horses ask humans to help solve problems
Researchers in Japan have shown that when horses face problems they cannot solve themselves, they use visual and tactile signals to get human attention and ask for help.
The study, conducted by Research Fellow Monamie Ringhofer and Associate Professor Shinya Yamamoto of Kobe University Graduate School of Intercultural Studies, has been reported in the online version of Animal Cognition.
The study also suggests that horses alter their communicative behaviour based on humans’ knowledge of the situation.
Communicating with other individuals to get information about foraging sites and predators is a valuable survival skill. Chimpanzees, who are evolutionarily close to humans, are especially skilled at understanding others. Studies suggest that chimpanzees distinguish the attentional states of other individuals (seeing or not seeing), and they are also able to understand others’ knowledge states (knowing or not knowing). Some domestic animals are also very good at communicating with humans – recent studies of dogs have revealed that they are excellent at understanding various human gestures and expressions. It is thought that these abilities were influenced by the domestication process.
Since they were domesticated 6000 years ago, horses have contributed to human society in various ways, from transport to companionship. Horse-
In this study, scientists investigated horses’ social cognitive skills with humans in a problem-
For the first experiment, an assistant experimenter hid food (carrots) in a bucket which the horse could not reach. The researchers observed whether and how the horse sent signals to the caretaker when the caretaker (who was unaware of the situation) arrived. The horse stayed near the caretaker and looked at, touched and pushed the caretaker. These behaviours occurred over a significantly longer period compared to cases when they carried out the experiment without hiding the food. The results showed that when horses cannot solve problems by themselves they send signals to humans both visually (looking) and physically (touching and pushing).
Building on these results, for the second experiment they tested whether the horses’ behavior changed based on the caretakers’ knowledge of the hidden food. If the caretaker hadn’t watched the food being hidden, the horses gave more signals, demonstrating that horses can change their behaviour in response to the knowledge levels of humans.
These two experiments revealed some behaviours used by horses to communicate their demands to humans. The findings also suggest that horses possess high cognitive skills that enable them to change their behaviour towards humans depending on the humans’ knowledge state. This high social cognitive ability may have been acquired during the domestication process.
The team plans further research to identify the trait that allows horses to form close bonds with humans, by comparing communication between horses, as well as looking more closely at the social cognitive ability of horses in their communication with humans.
“By deepening our understanding of the cognitive abilities held by species who have close relationships with humans, and making comparisons with the cognitive abilities of species such as primates who are evolutionarily close to humans, we can investigate the development of unique communication traits in domesticated animals. This is connected to the influence of domestication on the cognitive ability of animals, and can potentially provide valuable information for realizing stronger bonds between humans and animals.”
For more details, see:
Ringhofer, M. & Yamamoto, S.
When horses are in trouble they ask humans for help
Anim Cogn (2016). Pp1-
Horse making demands: The horse a) lightly pushes and b) looks at the caretaker standing outside the paddock. Food is hidden inside one of the two silver buckets behind them. When horses cannot obtain this food by themselves, they give humans visual and tactile signals. Photo: Kobe University