Scene: The dojo of Chop Chop/Master Onion. Pudgy the dog approaches the sensei.

Text:

Pudgy: Sensei! You must tell me. What is in Snoopy's Doghouse?
Master Onion: A pool table, a cedar chest and cabinet, and a 1931 biplane engine.
Pudgy: Yes master. But what else?
Master Onion: My son, there are some things in life that man is not meant to know.