Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ... and what a reunion we're having!" Charlie Brown reads from Snoopy's letter in a later strip.

"I found my sister Belle ... and what a reunion we're having!" Charlie Brown reads from Snoopy's letter in a later strip. Marbles was introduced in the Sept. 28, 1982 strip.

Without Peanuts' May 1965 family reunion storyline, readers would have never got the chance to know Spike, Olaf, Andy, ...

Discover showtimes, read reviews, watch trailers, find streaming options, and see where to watch Snoopy's Reunion (2022). Explore cast details and learn more on Moviefone.

Snoopy says. Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ... and what a reunion we're having!" Charlie Brown reads from Snoopy's letter in a ...

On Oct. 2, 1950, "Peanuts" made its comic strip debut. Just two days later, Snoopy was introduced. Get to know the dog's breed and biography.

Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ... and what a reunion we're having!" Charlie Brown reads from Snoopy's letter in a later strip.

Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ... and what a reunion we're having!" Charlie Brown reads from Snoopy's letter in a later strip.

On Oct. 2, 1950, "Peanuts" made its comic strip debut. Just two days later, Snoopy was introduced. Get to know the dog's breed and biography.

On Oct. 2, 1950, "Peanuts" made its comic strip debut. Just two days later, Snoopy was introduced. Get to know the dog's breed and biography.

Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ... and what a reunion we're having!" Charlie Brown reads from Snoopy's letter in a later strip.