Magician Jose Ahonen made treats disappear right in front of dogs’ noses. When I watched videos of his work, I saw dogs who understood that a treat had been there and that it MUST still be nearby. Their reactions made it clear that they knew the treat had gone missing.
One common response was for the dogs to look down at the ground as though the treat had fallen. A fallen treat is probably a familiar experience for most dogs, so they were using a search strategy that had worked in the past. Many of the dogs began to sniff and investigate the immediate area. Another frequent reaction was to look at Jose or in the direction of the camera, where perhaps the guardian and a camera operator were. Many dogs look to people for information or for help when they are confused. I see this in training or when a toy has rolled somewhere inaccessible, so it was not surprising that dogs who were puzzled about the location of the treat did this. A number of dogs pawed at Jose’s hands, which is such a common response to a closed fist around a treat that I’ve used it many times as part of training a dog to “Shake” or “High-5”.
The most interesting aspect of the video is that dogs in it appear to show object permanence, which is the understanding that objects continue to exist even when they cannot be observed. Object permanence is considered a major milestone in human development. Many children have been tested—an experimenter hides a toy while the child is watching and then observes whether the child can find it. Most children show object permanence by the age of one year. A lot of dogs have shown object permanence in scientific studies, but it is not universal in the species.
The magic tricks with dogs in these videos were for entertainment and are not controlled experiments. The smell of treats was still present, so that could have tipped the dogs off that the treats still existed. Their actions are certainly not conclusive evidence that dogs are cognitively capable of object permanence, but they are still suggestive of it.
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I wish I could see a longer clip of each dog because I’m curious how much time they spent searching and whether they showed increasing frustration. It was a relief to realize that each dog was given a treat before and after the disappearing trick, which I would imagine lessened any distress about the missing treat. For some of the dogs, the most distressing part may have been the laughter of the people observing. I think dogs can tell when they are being laughed at, and it bothers me. Still, it's really hard not to laugh when you watch this (I know I did!), so I can hardly blame people for that.
How do you think your dog would react to a magician making a treat disappear?