Continuity mistake: When Sam points his gun at Bugs at Fort Knox, he says "But I can't take any chances!" and throws away the gun. In the next shot, the gun is back in his hand again.
Continuity mistake: When Yosemite Sam is surprised to see the gold that Bugs has found, there is a boiler behind him that changes to a barrel in the next shot.
Continuity mistake: When Bugs leaves the shop, he leaves the piece of gold on the counter, but when we return to Pierre, the gold has disappeared.
Continuity mistake: When Pierre weighs the gold that Sam brought in, there are two weights next to the scales, but when Bugs walks up to the counter with the gold he found, the weights have disappeared.
Continuity mistake: When Sam tells Bugs that their partnership has dissolved after he starts digging for gold, Sam throws a rock at Bugs who is standing near the edge of the cliff. Behind Bugs you can see two small rocks. When he looks over the end of the cliff the rocks disappear, but in the next shot they are back again.
Continuity mistake: When Louie sees Yosemite Sam whilst slouching over by the river, he drops his pipe and pan and you can see that the pan is by his feet, but when Sam starts shooting at Louie and he runs for cover, the pan has disappeared.
Continuity mistake: When Bugs digs up the ground and finds a collar button, there is a hole behind him that disappears in the next shot.
Continuity mistake: When Sam begins digging a hole at Fort Knox, you can see there is nothing behind him when he starts digging, but when he discovers gold, a sign post has disappeared.