Revealing mistake: At the beginning when the one monkey falls to its death, it's obviously a stuffed animal posed as a dead monkey.
Continuity mistake: When Tarzan brings the dead panther, flamingos suddenly appear out of nowhere.
Continuity mistake: Tarzan raises a knife with his arm completely covered in blood, to show the apes that he has killed the panther. When the angle changes there's barely any blood.
Continuity mistake: While wounded D'Arnot hides in the tree, a leaf on the left swaps from laying on his shoulder or hidden behind his head, between shots.
Continuity mistake: The two arrows on the ape's chest change positions between shots: one of them moves closer/away from the nipple.
Continuity mistake: When Tarzan finds the ape with 2 arrows stabbed, the blood on the side of his mouth appears/disappears randomly between shots.
Continuity mistake: When Jack and Alice's carriage leaves the premises, Jack's father is leaning against the window in one shot, then away, then back close to the window.
Continuity mistake: Dead Alice's face alternates between being in the shadows or with a big beam of light on her cheek.
Continuity mistake: When Jack finds out that Alice is dead, she is looking upwards or straight, depending on the shot, with no continuity whatsoever.
Continuity mistake: When the baby's cries wake up Jack, he raises his head from the diary. When the angle changes the previous ink spots on the pages have disappeared.
Continuity mistake: When Jack is asleep on his diary, and his off screen voice narrates "the difficult birth of our son", the lizard on his hand swaps positions between shots.
Audio problem: When the monkey walks to the cradle to calm the crying baby, in the wide shot the baby is crying out loud, then in the close-up he is totally calm, mouth closed, yet the crying is still heard.
Continuity mistake: When the first flying arrow stabs D'Arnot's butt, it lands diagonally. When the angle changes it's horizontal.
Continuity mistake: When the monkey kills Jack, he lays with his head facing the right side. A frame later he is facing upwards.