Paro (robot)

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Paro robot seal

Paro is a therapeutic robot baby harp seal, intended to be very cute and to have a calming effect on and elicit emotional responses in patients of hospitals and nursing homes, similar to animal-assisted therapy except using robots.


Paro was designed by Takanori Shibata of the Intelligent System Research Institute of Japan's AIST beginning in 1993. It was first exhibited to the public in late 2001, costing US$15 million to develop, and became a "Best of COMDEX" finalist in 2003,[1] and handmade versions have been sold commercially by Shibata's company Intelligent System Co. since 2004.[2] Paro is based on harp seals Shibata saw in an ice field in northeastern Canada, where he also recorded their cries in order to use them for Paro's simulated cries.[3][4] Paro was classified as a Class 2 medical device by U.S. regulators in fall 2009.[2]

Paro has been used primarily in care facilities, especially as a form of therapy for dementia patients.[5]


Paro is outfitted with dual 32-bit processors, three microphones, twelve tactile sensors covering its fur, touch-sensitive whiskers, and a delicate system of motors and actuators that silently move its limbs and body.[2] The robot responds to petting by moving its tail and opening and closing its eyes. Shibata designed it to actively seek out eye contact, respond to touch, cuddle with people, remember faces, and learn actions that generate a favorable reaction. He argues,

Just like animals used in pet therapy, Paro can help relieve depression and anxiety—but it never needs to be fed and doesn’t die.[4]

Paro also responds to sounds and can learn names, including its own. It can simulate emotions such as surprise, happiness and anger. It produces sounds similar to a real baby seal and, unlike a real baby seal, is programmed to be active during the day and to sleep at night.[4]

Paro robot seal

Ethical concerns[edit]

Dr. Bill Thomas, founder of the Green House Project which aims to replace long-term care at nursing homes with small, home-like environments where people can live full and interactive lives, raised concerns over whether it was humane to entrust the task of emotional support for human beings to robots.[2] Sherry Turkle, the director of MIT’s Initiative on Technology and the Self, argued that robots like Paro provide an illusion of a relationship, and those who find human relationships challenging may turn to robots for companionship instead.[4][6]

In popular culture[edit]

In The Simpsons episode "Replaceable You", Bart Simpson and Martin Prince created robotic baby seals which they named "Robopets". These were essentially Paro robots which were designed to make the old people in Springfield Retirement Castle happier.

Paro is featured in "Old People," the eighth episode of the first season of Aziz Ansari's Netflix show, Master of None.


  1. ^ Meet Paro, the therapeutic robot seal,, 20 November 2003
  2. ^ a b c d Tergesen, Anne; Miho Inada (June 21, 2010). "Paro the Robo-Seal Aims to Comfort Elderly, but Is It Ethical?". The Wall Street Journal. Retrieved November 6, 2015. 
  3. ^ Robot baby seals to replace cats and dogs as pets in hospitals, nursing homes, The Canadian Press, January 11, 2009
  4. ^ a b c d Piore, Adam (November 18, 2014). "Will Your Next Best Friend Be A Robot?". Popular Science. Retrieved November 7, 2015. 
  5. ^ Johnston, Angela (August 17, 2015). "Robotic seals comfort dementia patients but raise ethical concerns". KALW. Retrieved November 7, 2015. 
  6. ^ Calo, Christopher J.; Nicholas Hunt-Bull, Lundy Lewis, Ted Metzler (2011). Ethical Implications of Using the Paro Robot with a Focus on Dementia Patient Care (Report). Association for the Advancement of Artificial Intelligence. Retrieved November 7, 2015. 

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