Shulz inserted Snoopy into the Peanuts comic strip October 4, 1950, two days after the strip premiered. He was just a pet dog at the time, consistent with the theme of a strip about children - who would quite commonly have had pets such as a dog. The original drawings of Snoopy were "slightly patterned" after Spike, one of Schulz's childhood dogs, so it is likely that Shulz gave the kids a pet dog because he had one as a child.
Snoopy as im assuming that's what you meant. was created by Charles Schultz.
The estate of Charles Schultz
Peanuts by Charles Schultz.
Peanuts was created by Charles M Schultz. I met him in the late 1960's and he drew a Snoopy for me and signed it.
Snoopy the dog was created by Charles M Schulz.
Planet Snoopy was created in 2008.
Snoopy's Christmas was created in 1967.
Snoopy's Reunion was created on 1991-05-01.
Snoopy Concert was created on 1995-05-19.
Snoopy Tennis was created on 2001-04-06.
Snoopy - video game - was created in 1984.
Schultz's pipefish was created in 1953.