SWAMP WATER (1941)

I actually have this movie on DVD. There was a few second unit shots from Okefenokee Swamp Park in Georgia. It's one of those movies I can't make up my mind about what to think about it, but it's very interesting. There's old wellknown actors (the two Walters, Brennan and Houston) and a few who's stardom was a few years later (Dana Andrews, Anne Baxter, Ward Bond).

Couldn't find a pic of the scene you mentioned, snsurone

Here is another of Brennan and the dog: