Well, it's a bit of both. While there are no actual cases of a human child being raised by wolves exactly as in 'The Jungle Book', the jungle environment and the behaviors of the animals are somewhat based on real observations. The law of the jungle described in the story has some roots in the real survival strategies and hierarchies among animals in the wild. But overall, it's a fictional tale that uses real - life elements to create an engaging story.
The Jungle isn't based on a true story. It's more of a fictional account that might draw inspiration from various sources but doesn't directly represent real events or people in a factual manner.
It's highly unlikely to be true. These kinds of tales often exist in the realm of fiction, created to thrill and capture the audience's imagination rather than representing actual occurrences in the jungle.