Another point of note is that
Snoopy is a
second hand dog, or rather,
pre owned. When
Charlie Brown picked
Snoopy up at the
Daisy Hill Puppy Farm he was already previoulsy owned by
Lila.
We are introduced to Lila in the "Snoopy Come Home" episodes where Snoopy receives a letter about his previous owner getting sick and being confined in a hospital and he promptly leaves his doghouse to visit Lila.
His quest takes him on many amusing adventures along with his sidekick woodstock.