August 26, 2025, 12:33 pm | Read time: 5 minutes
A dog sneaks crouched through the room to a fallen treat, its eyes repeatedly checking its owner. Halfway to the delicacy, the dog freezes, motionless. Has anyone seen it? A few seconds of absolute silence. Then, as if it had checked for invisible glances, it darts quickly at the treat, snatches it away—and acts as if nothing happened. This behavior, where dogs seem to have learned to deceive us, is causing amusement in various videos—and has now been scientifically examined.
Dogs Become “Master Thieves” for Laughs
The videos all start similarly: A person prepares food, or something accidentally falls. Then the animal stealthily crawls over until the treat is devoured. Descriptions mention “stealth mode” or “Objective: Infiltrate. Crawl. Steal.” The dogs clearly know how to trick humans deliberately.
Can I take the food now—or will I get caught? This question seemed to be on the minds of many dogs in the experiment. Even when the person wasn’t in the room, many dogs chose the “safe” side: where the person couldn’t see them. What prompted them? Just a sound—the click of a knife on a cutting board. Researchers led by Ludwig Huber from the Messerli Research Institute at the University of Veterinary Medicine Vienna investigated how dogs infer human sightlines from acoustic cues.
In a cleverly designed experiment, dogs had to decide from which food plate to help themselves—with or without mental eye contact with the human. The results show: Dogs can remarkably combine what they’ve seen and heard—and deduce what the human might see or know. The study was published in the journal “iScience.”
Do Dogs Notice When We Watch Them?
The question targets a skill in dogs known as “perspective-taking” or “Theory of Mind”—understanding what others know, see, or believe. Previous studies couldn’t clarify whether dogs possess this ability or merely react to learned behavioral rules. To investigate this difference, the research team developed a scenario where visible cues were practically excluded.
Dogs had to decide whether to steal food. And that, even though the person wasn’t in the room, but was indicated by a familiar sound. The behavioral researchers wanted to know: Do dogs really understand what we see, or do they just react to our visible cues like body posture or gaze direction?
Seventy-three dogs participated in the Clever Dog Lab at the University of Veterinary Medicine Vienna. The dogs were first familiarized with the spatial situation where a person was cutting carrots at a table—audible and visible through a curtain. Only one of two food plates was in the person’s line of sight.
In the test phase, the person was absent, but the previously heard cutting sound was played over speakers. Dogs were to decide which plate to approach first—the “seen” or the “unseen” one. A control group heard street noise instead. The study was approved according to animal welfare guidelines and was non-invasive.
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The results clearly support the so-called “Hidden Stealing” model. In the test group with the cutting sound, 28 out of 36 dogs (78 percent) first chose the plate outside the person’s previous line of sight. Precisely where they felt unobserved. Dogs have learned to trick us by assessing our attention and using situations to their advantage.
In the control group with street noise, only 20 out of 37 dogs (54 percent) chose this plate—a result statistically equivalent to chance. The analysis showed that age and gender had no influence on the decision. Also, the time it took for dogs to decide did not vary significantly between groups. The dogs seemed to actually link previous visual experience with the current acoustic situation—a remarkable cognitive process.
This study provides strong evidence that dogs can anticipate human sightlines, even when the person is not present. Crucially, the dogs had only experienced it once from where the person could see them—and remembered it when they heard the cutting sound again. The decision to choose the “invisible” plate suggests that dogs can flexibly use past perception experiences to guide behavior.
“If I Can See You, You Can See Me Too”
This study impressively shows that dogs not only respond to visual stimuli but can also use acoustic cues to predict human behavior. And exploit it to their advantage, such as eating fallen food that was actually forbidden to them. It becomes clear that dogs have learned to trick us whenever an opportunity arises—a fascinating testament to their intelligence and adaptability.
Whether they truly adopt the human perspective or rely on their own experiences remains initially open. What is clear, however, is that dogs have a remarkable sense of our attention and even use it to steal food when they feel unobserved. For dog owners, this means: Animals often pay closer attention to us than we think. Even when we’re not in the room.
The experimental setup was designed to exclude obvious visual cues. Yet it remains open whether dogs truly take on the human perspective or act solely from their own experience. It is conceivable that dogs have learned: “If I can see you, you can see me too.”
This “heuristic” would also be sufficient to explain the observed behavior. It could also be that dogs generally associate the sound of cutting with human presence—independent of the specific experiment. The researchers themselves emphasize that a simple behavioral rule cannot be ruled out. Future studies would need to test whether dogs show similar performance with novel sounds that are not familiar from everyday life. 1