Great whiskers, it's a cat! He's a cat!
6 seconds sound clip from the An American Tail movie soundboard.
You can hear this line at 01:00:42 in the Blu-ray version of the movie.
Quote context
[...]
- You're wrecking the plan! It's not supposed to happen this way!
- Disregard the nose. What's in a nose? A nose by any other name would smell as sweet...
- Great whiskers, it's a cat! He's a cat!
- Hey, hey, hey, hey, wait a minute. Who are you going to believe, me or your own eyes?
- Release the secret... No, no!
- Hey, easy, easy! All right. Then, I take it we can't do business.
- Warren, you're through. Washed up, ruined!
- You'll never get another cent from any mouse, anywhere.
[...]