In scenes where Walter was wrestling with Jasmine, they had to use a stunt double person to make it look exactly like Haley named Marie and the crew had to cut her hair really short when they are shooting the scenes with the real lion. When they shoot scenes with Haley, you can see behind the head that they are using the puppet lion.
In the bar fight the shotgun is cycled open and closed to chamber a shell and get attention. In following camera shot action is open (wooden forearm to rear of barrel). For remaining scenes the action is again closed (wooden forearm back to front of barrel).
During Hub's fight with the teens, no one lays a hand, or knife on him. At the end it can be clearly seen that Hub's shirt is whole. When they get back to the farm, he has several small knife holes in the upper left.
In the final scene before Walter hears the helicopter his hair is perfectly still and then begins blow as if the helicopter is right over him even though the helicopter has not yet appeared over the tree line.