Watch out for that dog, son.
4 seconds sound clip from the Hondo (1953) movie soundboard.
You can hear this line at 00:03:43 in the Blu-ray version of the movie.
Quote context
[...]
- The water sure looks inviting.
- Watch out for that dog, son.
- Could you hire me or sell me a horse?
- Of course. I've only got plow horses, and two that are only half-broken.
- The hand that was breaking them for me got hurt and had to go to town.
- You mean you're staying here alone?
- Oh, no. No, my husband is up in the hills, working some cattle.
[...]