Oh, but it's not supposed to be polar bears. It was a picture of Pooh.
4 seconds sound clip from The New Adventures of Winnie the Pooh - Tigger Got Your Tongue? / A Bird in the Hand (S3E10).
You can hear this line at 00:01:54.720 in the Blu-ray version of the TV Series.
Quote context
[...]
- Oh, bother. I'm sorry. I think my foot went to sleep without me.
- I'm almost done, Pooh. I'll hurry.
- Dear! My painting of you is gone.
- Hello, there, fellow artistes.
- It's brilliant, genius. Looks like polar bears eating marshmallows in a snowstorm.
- Oh, but it's not supposed to be polar bears. It was a picture of Pooh.
- It's true. I was there. And now I'm... gone. Aren't I?
- Yes. And nobody at all was around.
- Aha! Of course nobody was there, and nobody is who pilfered Piglet's Pooh picture.
- It was?
[...]