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Pet Rock were a 1970s collectible conceived in Los Gatos, California by advertising executive Gary Dahl.
Development
In April 1975, Dahl was in a bar (which is now Beauregard Vineyards Tasting room in Bonny Doon) listening to his friends complain about their pets. This gave him the idea for the perfect "pet": a rock.
A rock would not need to be fed, walked, bathed, groomed and would not die, become sick, or be disobedient. He said they were to be the perfect pets, and joked about it with his friends. However, he eventually took the idea seriously, and drafted an "instruction manual" fo...