Go. Look there.
3 seconds sound clip from the The Secret of NIMH (1982) movie soundboard.
You can hear this line at 00:50:52.633 in the Blu-ray version of the movie.
Quote context
[...]
- Jonathan Brisby made possible the rats' escape from the terrible cruelty of NIMH.
- Jonathan? He was killed today while drugging the farmer's cat, Dragon.
- Oh, I never knew just what happened.
- Why did he never tell me about any of you? Why?
- To answer that, I must tell you about NIMH and our plan.
- We were captured, put in cages, and sent to a place called NIMH.
- Often, at night, I would hear them crying out in anguish.
[...]