I'd say they're smart. They're too damn smart.
2 seconds sound clip from the Congo (1995) movie soundboard.
You can hear this line at 01:19:45.389 in the Blu-ray version of the movie.
Quote context
[...]
- They're testing their perimeter.
- Gorillas are very smart, but they're not aggressive. These things are very aggressive.
- I'd say they're smart. They're too damn smart.
- They're out there. But what are they doing?
- Couple of hours till first light. Then we're out of here.
[...]