He sketched out two dogs sitting in front of a computer, one in a chair and one on the floor, and the one-liner popped into his head: “On the internet, nobody knows you’re a dog.” ...

In 1993, the New Yorker published a cartoon featuring two dogs sitting at a computer. With a paw resting on the keyboard, one says to the other: “On the internet, nobody knows you’re a dog.” ...

Snoopy is the famously silent dog that originated in the “Peanuts” comic strip by Charles M. Schulz in October of 1950. He also appeared in various “Peanuts” television specials ...