On the Internet, nobody knows you're a dog

"On the Internet, nobody knows you're a dog" is an adage which began as a cartoon caption by Peter Steiner and published by The New Yorker on July 5, 1993. The cartoon features two dogs: one sitting on a chair in front of a computer, speaking the caption to a second dog sitting on the floor listening to the first. As of 2011, the panel was the most reproduced cartoon from The New Yorker, and Steiner has earned over US$50,000 from its reprinting.

Peter Steiner, a cartoonist and contributor to The New Yorker since 1979, said the cartoon initially did not get a lot of attention. Later it took on a life of its own, and that he felt similar to the person who created the "smiley face". In fact, Steiner was not that interested in the Internet when he drew the cartoon, and although he did have an online account, he recalled attaching no "profound" meaning to the cartoon; it was just something he drew in the manner of a "make-up-a-caption" cartoon.

In response to the comic's popularity, he stated, "I can't quite fathom that it's that widely known and recognized."

The cartoon marks a notable moment in the history of the Internet. Once the exclusive domain of government engineers and academics, the Internet had by then become a subject of discussion in general interest magazines like The New Yorker. Lotus Software founder and early Internet activist Mitch Kapor commented in a Time magazine article in 1993 that "the true sign that popular interest has reached critical mass came this summer when the New Yorker printed a cartoon showing two computer-savvy canines".

The cartoon symbolizes an understanding of Internet privacy that stresses the ability of users to send and receive messages in general anonymity. Lawrence Lessig suggests "no one knows" because do not force users to identify themselves; although local access points such as a user's university may, this information is privately held by the local access point and is not an intrinsic part of the Internet transaction.

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Wikipedia