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People can form attachments to robot dogs, but the best direct comparison available does not show that people bond with them as strongly as with living dogs. In a 2025 study of Sony AIBO and real dogs, participants reported stronger attachment to dogs and rated them as better companions. Their urinary oxytocin rose during dog interactions and fell during AIBO interactions. That result does not mean nobody can love a robot dog; it means the evidence does not support treating a convincing simulation as an emotional equivalent to a living animal.

What the direct comparison found

A 2025 peer-reviewed study by Klumpe, Mitchell and colleagues compared interactions with Sony AIBO and real dogs. Across the study, 19 female participants completed 12 affiliative interactions in two one-month bonding phases. Participants reported stronger attachment to the dogs and rated them as better social companions. Urinary oxytocin increased during dog interaction and decreased during AIBO interaction.

These findings point in the same direction across self-reported attachment, companionship ratings and a biological measure: in this study, interactions with living dogs produced stronger bonding responses. They do not establish that every person will react the same way, or that oxytocin alone determines whether someone feels affection. The sample was small, included only women, and the phases were limited to one month each. It is a controlled comparison, not a population-wide estimate or a test of lifelong relationships.

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What the result does—and does not—say

  • It supports a difference in this comparison. Participants rated the real dogs more highly for attachment and companionship, and the measured oxytocin response also favored dog interaction.
  • It does not rule out meaningful attachment to AIBO. A person can value a robot companion even if their bond differs from the bond they form with an animal.
  • It does not tell us how common either response is. The study sample cannot be used to calculate what percentage of people love robot dogs, or to generalize to every robot design or setting.

Why a robot dog can still feel like a companion

A robot dog combines familiar social cues—such as a dog-like shape and responsive behavior—with predictable, engineered interactions. Those cues can invite people to speak to it, care for it, or treat it as a social partner. Research on robot design has examined how appearance and framing affect bonding, trust and continued interaction, so how a robot is presented is part of the relationship rather than mere decoration.

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But a response that looks affectionate is not evidence that the device experiences affection. AIBO can simulate dog-like behavior; a living dog has its own biological needs, feelings and behavior. The 2025 study’s discussion described participants as tending to see AIBO as a dog simulation rather than as a distinct entity with both dog-like and dog-distinct traits. Participants also emphasized the genuineness of dogs’ emotions and attachment in contrast with AIBO’s manufactured simulation.

That distinction helps explain how both statements can be true: someone may feel real affection toward a robot, while recognizing that the robot’s apparent affection is generated behavior rather than a living animal’s emotional response.

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Robot dog or living dog: the practical differences

The right comparison depends on what you need. A robot dog may be appealing where predictable interaction or reduced animal-care demands matter. A living dog offers a relationship with an animal, but that relationship comes with ongoing responsibilities. The study did not compare costs, care outcomes or convenience, so those practical differences should not be mistaken for measured results.

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Consideration Living dog Robot dog such as AIBO
Emotional reciprocity Participants in the 2025 comparison reported stronger attachment and rated dogs as better social companions; they also described dogs’ emotions and attachment as genuine. Can offer responsive, dog-like interaction. The 2025 study describes AIBO’s responses as manufactured simulation, not evidence of a robot’s felt emotions.
Bonding measures In the 2025 study, urinary oxytocin increased during dog interaction. In the same study, urinary oxytocin decreased during AIBO interaction. The result is specific to the study’s participants and conditions.
Care and upkeep Requires animal care, including feeding, veterinary care, training, exercise and arrangements such as boarding when needed. Requires charging and may require maintenance, software support or repair. The study did not compare upkeep costs or quantify the burden of either option.
Potential setting May be a household companion, subject to the dog’s needs and the household’s ability to care for it. May be considered for structured support settings, but evidence for a particular use should be evaluated separately from evidence about household companionship.

Could a robot dog help with loneliness or hospital isolation?

Possibly, in a specific supportive-care role—but evidence for a use in care is not proof that a robot dog replaces a living dog or solves loneliness generally. Sony reported on February 27, 2024, that an AIBO intervention for pediatric inpatients experiencing isolation showed an effect in improving psychological stress. The report is from the company, and the full effect size and protocol were not independently checked here, so the claim should be treated as a promising, context-specific report rather than a settled clinical conclusion.

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A structured intervention can have a different goal from a pet relationship. If the aim is to offer interaction in a hospital or another setting where a live animal may be impractical, a robot might be useful even if it does not produce the same bond. Anyone considering it for a health or care program should look for details about the participants, intervention, outcome measures and independent evaluation—not assume that a result in pediatric inpatient care applies to other ages, diagnoses or settings.

What to consider before choosing an AI pet

Think about what you expect from the relationship, what the device actually does, and what responsibilities come with either choice. A robot may be easier to accommodate in some circumstances, but it is still a product that can need power, upkeep and support; a living dog is an animal whose needs persist regardless of convenience.

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  • Be clear about simulation. Enjoying a responsive robot does not require believing it has feelings. Clear expectations help prevent simulated behavior from being mistaken for evidence of inner experience.
  • Consider autonomy and responsibility. A living dog has needs that must be met by a caregiver. With a robot, responsibility shifts toward the people and organizations that design, operate and maintain the system.
  • Ask what data the product handles. Privacy is a relevant question for connected social robots. Check what information is collected, where it is processed, how long it is retained and whether it can be deleted before relying on a device in a private home or care setting.
  • Check safety and access. Consider physical safety, accessibility for the intended user, and who is accountable if a device behaves unexpectedly or stops working.
  • Match the choice to the need. If the goal is a living relationship and the household can meet an animal’s needs, a robot is not a like-for-like substitute. If the goal is predictable interaction in a structured setting, a robot may be worth evaluating on that narrower purpose.

These questions reflect broader social-robotics concerns: emotional attachment, transparency, autonomy, privacy, safety, justice and responsibility. They matter because people can respond socially to a machine even when the machine does not share a person’s experience.

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So, can a robot dog replace a real dog?

Not as an evidence-based emotional equivalent. The direct AIBO comparison found stronger bonding responses to living dogs, while other evidence and reported care uses leave room for robot dogs to be appealing or useful in a more limited role. The most accurate expectation is not “a real dog without the work,” but “a responsive device that some people may value, for different reasons and with different limits.”

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