Trivia: The vultures at the end of the movie are meant to represent the Beatles, and are the same voices used for Yellow Submarine.
Trivia: The music for Kaa's song "Trust in Me" was taken from an unused Sherman Brothers song "Land of the Sand", originally written for Mary Poppins.
Trivia: This is the last movie that Walt Disney made himself.
Trivia: In a scene near the beginning of the movie, Mowgli is jumped on by his wolf family. The exact way they jump on him, lick him, and the way Mowgli wipes his face afterwards is identical to a scene in The Sword in the Stone when Wort is greeted by his dogs.
Trivia: Bill Peet (story artist on "101 Dalmatians" and "The Sword in the Stone") originally wrote the adaptation for the movie, but left the project due to creative differences. This was because Walt Disney found his version to be too dark and depressing.
Trivia: Walt Disney died before the film's release. It was believed that if this film was a major commercial failure, Disney would stop making animated films. Fortunately, the film was a huge success.
Answer: The animals considered man a strange creature and did not understand their ways, like wearing clothes and shoes. They were scared when Mowgli brought them fire. They only knew jungle ways, they figured the humans would eat him, like any small creature left on his own. Plus they knew man as a hunter and killer.