When Helga takes out her locket while behind the car, Arnold is missing from his stoop.
When Arnold walks toward the front door of the boarding house, his pants are incorrectly colored brown. When he opens the door and the animals run inside the house, his pants return to their normal blue color.
Elk and peafowl can be heard in the San Lorenzo jungle; however, both animals are not native to Central America.
When Grandpa says "Sorta like you, Pookie.", she isn't wearing her white apron.
Harold is listed in the credits, though he doesn't speak.
The animation of the volcano erupting slightly glitches at one point.
When Grandpa says, "I can't believe they didn't name you Phil!", his eyebrow isn't colored for one frame.
Miles' neck is colored wrong after hugging baby Arnold in the park.
As Arnold walks towards Phil right before reading the last journal entry, some of the spikes on his hair cut off.
After finding the map, there's an animation error with how Arnold's holding the journal.
Miles says 'helm' instead of 'tiller' at the beginning pirate scene.
In this episode, it is believed that the sleeping sickness is fatal as Eduardo mentions that most of the Green-Eyes have died from the illness. However, in The Jungle Movie, the sleeping sickness is shown to be non fatal.
