I don't know, but if you ask me, that cat's a spy there.

5 seconds sound clip from the Ocean's 11 (1960) movie soundboard.

You can hear this line at 00:51:05 in the Blu-ray version of the movie.

Quote context

[...]

- Yeah. Little country like Andorra.

- Or Pomona.

- What about Little Rock?

- Hey, fellows. You have any idea how much money a man can steal if he was something like Commissioner of Indian Affairs?

- That's what I'll be: Commissioner of Indian Affairs.

- That you'll never be.

- Why not?

- Because I'll be Secretary of the Interior and I won't appoint you.

- Certitude, my dear fellow, went out with equestrian statuary.

- Now what kind of language is that?

- Beats the hell out of me.

- I don't know, but if you ask me, that cat's a spy there.

- So where is this horse wrangler? 9:30. Still running around Salt Lake City, I'll bet, saying good-bye to all his wives.

- And his horses.

- Up and down, up and down. And the houseboy's night off yet.

- Mr. Acebos?

- Who's asking?

- He is.

- Do you know him?

- Jackson. Louis, my boy!

[...]