Colonel Hathi breaks his stick. In the next scene it is intact, then broken again.
When Baloo is fighting Shere Khan, the landscape is desolate and littered with dead trees. After the fight, when Baloo is lying unconscious with Mowgli and Bagheera looking over him, the landscape is full of live plants and trees.
The stripes on Shere Khan's forehead are visible during the extreme close up during his entrance, then absent throughout the movie.
When Shanti is kneeling by the water at the end, singing, she fiddles with one of her pigtails and flips it back. It's tied with purple ribbon. In the next shot, after she fiddles with her other braid, both ribbons are missing and her hair is loose.
When Bagheera drops baby Mowgli off with the wolf pack, he leaves the basket at the mouth of the cave den. When he leaves the baby, the basket is closed. When he looks back from his hiding place, the basket is open.
Hathi, a bull Asian elephant, is the elephant leader. In real life, elephants are a matriarchal society, led by the top cow elephant (Winifred). Once a bull elephant matures, he would either live alone or join a group of other bulls.
Winifred, Hathi's mate, is apparently the only female elephant in her herd. In real life, elephant herds mostly consist of females. Mature males live alone or in 'bachelor' herds.
Wolves wag their tails as a sign of submission, not curiosity.
Baloo, a sloth bear, is about the size of a grizzly bear. Sloth bears are some of the smallest bears in the world.
Kaa closes his eyes several times in the film. In real life, snakes don't have eyelids.
The story takes place in India, yet King Louie is an orangutan, which live in Borneo and Sumatra. Disney's promotional materials solved the problem by declaring Louie an undiscovered "cryptid" species.
After the fight with the monkeys, Baloo and Bagheera have black eyes. They seem to be reversed at one point because they're looking at reflections in a pond.
King Louie lacks the beard and floppy cheeks of a real male orangutan. He is a fictional species, as promotional materials claim.
When King Louie tells Mowgli to have two bananas, he holds up three fingers. King Louie can't count. Plus, a backward hand with 2 upturned fingers is a rude gesture in some countries.
When Kipling named his animal characters, he tried to use the Hindi term in the name. Sher means "lion" instead of "tiger."
The same animation of Colonel Hathi and his elephants marching is reused several times during the song. Since they sing different lyrics, their mouth movements do not match what they are saying. It's most noticeable when they cross the water.
During the "I Wanna Be Like You" song, King Louie says "One more time!" Baloo appears to be mouthing the words, but his voice isn't heard.
When Bagheera is trying to pull Mowgli away from the tree, Bagheera demand "Let go, you!", and Mowgli replies, "You let go of me!" However, neither of their mouths are moving.
In several scenes, monkeys hang from their tails. Monkeys with grasping tails are only found in South America.
The film is set in India, yet the monkeys' ruined city is clearly Cambodian.
During "The Bare Necessities", Baloo picks the fruit off a prickly pear cactus and a pawpaw, which he identifies by name. Those plants only grow in North America.
Despite the film being set in India, Hathi's ears resemble those of an African elephant.
Baloo asks Mowgli to scratch his left shoulder, and Mowgli scratches his right shoulder.
When Bagheera argues with Baloo, Bagheera incorrectly calls the monkeys "apes". Most monkeys have tails, but no apes do.
In the beginning, Bagheera refers to the wolf children as cubs. Baby wolves are known as pups, not cubs.