Who's Snoopy's Best friend?

This is a GOOD question, but a bad question for the Quiz! Its never been stated. Charlie Brown will say, in an ironic tone "Mans best friend" when he's talking about Snoopy. But Snoopy has NEVER EVER said or intimated that either Charlie Brown or Woodstock is his best friend. You'd have to ask the creator Charles Shulz, and unfortunately he's dead. Personally, I think the quiz question should be removed, as there is NO definative answer ans can only cause argument, rather than discussion.......

im thining woodstock 'cause he's always with snoopy, and, ya

I think it's Woodstock