You mean Cindy Bear disappeared?
4 seconds sound clip from the Hey There, It's Yogi Bear (1964) movie soundboard.
You can hear this line at 00:35:38 in the Blu-ray version of the movie.
Quote context
[...]
- Yogi loves Cindy. Yogi loves Cindy. Cindy loves Yogi.
- Now to inform Mr. Ranger that I never went to San Diego.
- Hello, Ranger Smith speaking.
- What? The bear never arrived?
- How do you like that? Somebody snitched.
- You mean Cindy Bear disappeared?
- Cindy? Mr. Ranger, what happened to Cindy?
- She disappeared on the way to the zoo.
- I did.
- I did.
[...]