When Jody runs away from home, he is barefoot. While trudging through the swamp, however, he is shown wearing dark sneakers (perhaps for protection during filming). Later scenes show him to be barefoot again.
When Jody is sitting with Flag, you see little buds where he is beginning to get antlers. In the next scene with Flag, as they are going to bed, you can clearly see that the deer has none at all.
When the bear and dogs are fighting, some footage is shown twice, but from a different angle.
At the very beginning of the movie, Jody's hand is on, then off, Caesar's reins.
The ship crew member says Jody was nearly run down in the dark. But this was not indicated by the shot of Jody in the canoe just prior to pickup.
As Jody discovers the fawn, a palmetto leaf moves out of the way - all by itself.
In the last scene as Jane Wyman welcomes her son back home, the shadow of the boom microphone is clearly visible on her dress as she comes in through the door.