When Amanda is traumatized by the rabbits in the mine shaft, Jackie goes well into the mine shaft while Amanda is still standing there screaming. But later Jackie tells Cole that he met Amanda just coming out of the mine shaft.
Cole Hillman shoots the rabbits through the floor boards, leaving bullet holes. But when he shot the rabbits just a few moments before, through the storm shelter, there were no bullet holes.
When the rabbit kills Mildred at the general store, it supposedly crashes through the store window, as Mildred had locked herself inside. But there was no sound of glass crashing or the window frame breaking.
When Gerry throws the flare, it should be about the size of a cigarette among the giant rabbits. Instead, it's regular scale.
When Deputy Jason is investigating the truck and the dead driver, this is suppose to be on the only road around, yet just over the ridge behind the deputy you can see the roof of a passing car not that far away.
During the climactic rabbit rampage, some of the rabbits look transparent.
During the is 'dynamite the mine' scene, the lens-shaped hole that Elgin Clark (DeForest Kelley) is looking into (when he is seen from below) is completely top/bottom symmetrical, suggesting that it was created optically.
The rabbits stampede the cattle at night, but the stock footage of cattle running is in daylight.
When the sheriff takes the helicopter headset and says the name "Jason," his mouth doesn't move.
During one of the scenes of the giant rabbits running down the road, you can see three men on the left. It looks like they are releasing the rabbits so they can run down the miniature road. If your focus is the rabbits you won't notice the men. In another scene a persons hand can be seen sort of hidden by branches (on the lower right). It looks like this person is coaxing some rabbits to move.
Before the rabbits stampede the general store, a crew member can be seen in the background of a shot of the empty road. On a miniature set, the man looks about 50 feet tall.
When the rabbits chase after the cattle, the shadow of something like chicken wire is visible on many of the rabbits' coats.
At about 42 minutes in when the pack of rabbits is chasing the pickup truck back to the ranch, you can see an animal wrangler in the background in a white t-shirt herding the rabbits. Maybe he was actually a giant and they were preparing for a sequel, "Hominum".
In Captain Billy's mining shack, a crew member's boots can be seen through a hole in the wall, just before Chris Morrell walks by.
The Miracle Drive-in is in Tucson, not Ajo as shown in the movie.
The rabbits are shown rampaging through the intersection of Arizona State Highways 82 and 83. This is in Sonoita, which is almost 140 miles from Ajo, the purported setting.
All the death and destruction is the result of a little girl's selfish act, but at no point is she ever punished or even reprimanded.
When Cole calls the sheriff from the rural phone booth, the sheriff tells him to stay there and he'll have a car pick him up. But Cole never tells him where he is.
The first time we hear of Roy and Gerry Bennett, Elgin Clark says they are a "young couple from the East." At the time of filming, Janet Leigh was 45 and Stuart Whitman was 44, while DeForest Kelley himself was 52.
Elgin Clark's first name is pronounced two different ways throughout the movie, sometimes with a hard "g" and sometimes with a soft "g."