When Cheetah discovers the whiskey bottle in the tent, the label is partly ripped. After drinking the contents, Cheetah leaves the tent with the bottle, walks on her hands, and plays with the bottle, which now has an intact label.
While Jane is carried as a prisoner on one of the canoes by the tribesmen, the ropes around her change from the top of her chest to her abdomen, and then back to the top of her chest.
Tarzan is once again seen fighting that same giant crocodile he fought with in Tarzan and His Mate (1934) and Tarzan Escapes (1936).
Some of the same footage seen in previous Tarzan films was recycled in this film, such as the treatment of the captured porters, Tarzan swinging through the trees on a trapeze, and the people climbing up the escarpment. The sequence of Tarzan battling a crocodile was first seen in Tarzan and His Mate (1934).
The fish the Jane prepares for dinner is covered in lemon slices. What few lemons there are in Africa are only grown in South Africa, a distance of almost 3000 miles from the isolated area that was most likely Tarzan's escarpment.
When the natives are hurling spears at the truck, the tips of some of the spears bend, flex, or rebound (they are obviously made of rubber or foam).