Snoopy's Getting Married, Charlie Brown (1985)

After Snoopy displays his usual level of courage and runs away from sentry duty, he happens to run into a beautiful female poodle, Genevieve. Smitten, they decide to get married. Now the Peanuts gang, along with Snoopy's brother Spike, try to help out with planning the affair - which has more than the usual complications.