Why, those no-good ornery varmints.
6 seconds sound clip from the An American Tail: Fievel Goes West movie soundboard.
You can hear this line at 00:08:36 in the Blu-ray version of the movie.
Quote context
[...]
- Fievel! Fievel! Get in here with the family!
- Oh, I got... I gotta do something. I will be tough. I will be brave.
- It's a spy... A spee... A spide... De... De... De... An arachnid!
- Why, those no-good ornery varmints.
- Fievel, come back. Fievel! Fievel, my son, come back!
- I see you're missing an eye, pilgrim. Now this makes it a fair fight.
[...]