Researchers have shown that dogs can indeed not only mimic human actions, but can retain actions in their memory. According to a new study by Claudia Fugazza and Adám Miklósi, from Eötvös Loránd University in Hungary, this deferred imitation provides the first evidence of dogs' cognitive ability to both encode and recall actions. The research is published in Springer's journal Animal Cognition.
In order to test if dogs possess the cognitive ability of deferred imitation, Fugazza and Miklósi worked with eight pet dogs who had been trained in the “Do as I do method” by their guardians. While dogs are good at relying on human communication cues and learn by watching humans (and other dogs), what this study set out to test was if dogs can perform imitatively not directly after seeing a human do it, but some time after seeing the action.
So they made the dogs wait for short intervals before they were allowed to copy the observed human action. An example of the action done by the human and then performed by the dog was ringing a bell or walking around an object like a bucket.
“The researchers observed whether the dogs were able to imitate human actions after delays ranging from 40 seconds to 10 minutes, during which time the dogs were distracted by being encouraged to take part in other activities. The researchers were looking for evidence of the dogs' ability to encode and recall the demonstrated action after an interval.”
Fugazza described how one of the tests was carried out: “The owner, Valentina, made her dog, Adila, stay and pay attention to her, always in the same starting position. Three randomly chosen objects were set down, each at the same distance from Adila. When Adila was in position, Valentina demonstrated an object-related action, like ringing a bell with her hand.
“Then Valentina and Adila took a break and went behind a screen that was used to hide the objects, so that Adila could not keep her mind on the demonstration by looking at the object. During the break, Valentina and Adila either played with a ball or practiced a different training activity, for example, Valentina asked Adila to lie down. Or they both relaxed on the lawn and Adila was free to do whatever she wanted—sniff around, bark at people passing by, and so on.
“When the break was over, Valentina walked with her dog back to the original starting position and gave the command 'Do it!'. In a control condition, the ‘Do it!’ command was given by someone other than the owner, who did not know what action had previously been demonstrated by the owner. After the 'Do it!' command, Adila typically performed the action that was previously demonstrated.”
It is remarkable that the dogs were able to do this. But the length of time varied—with an action familiar to the dog, delays were as long as ten minutes. If the action/task was novel and the the dogs had not be exposed to it before, they were still able to perform it after a delay of one minute.
“The authors conclude: "The ability to encode and recall an action after a delay implies that the dogs have a mental representation of the human demonstration. In addition, the ability to imitate a novel action after a delay without previous practice suggests the presence of a specific type of long-term memory in dogs. This would be so-called ‘declarative memory,’ which refers to memories which can be consciously recalled, such as facts or knowledge."
To view more demonstration on the "Do as I do" method, see this, and the following demonstrations.
Fugazza C & Miklósi A (2013). Deferred imitation and declarative memory in domestic dogs. Animal Cognition; DOI 10.1007/s10071-013-0656-5