All Dogs Go to Heaven/Fridge

Fridge Brilliance
"Whippet: What's that you have behind your back?
 * The Whippet says that she knows exactly how everything turns out and that there are no surprises in Heaven. So, why didn't she know Charlie was going to rewind his watch? Because Charlie's not like other animals who get into Heaven: he'll take the difficulty of living over the easy way of the afterlife. Charlie is a surprise. At the end of his song, he even sings it:

Charlie: She's gonna be-

Whippet: Charlie, don't wind that watch!

Charlie: -surprised!"


 * Did they imply at the very end that

Fridge Horror

 * In the Christmas Special, puppies are seen in Heaven. That carries a rather sad subtext.