What is Rudyard Kiplings most famous book?

Rudyard Kipling's most famous book is generally considered to be The Jungle Book.

While he wrote many other well-known works, such as "Kim," "Just So Stories," and "The Second Jungle Book," "The Jungle Book" is the one that stands out for its enduring popularity, its influence on popular culture, and its iconic characters like Mowgli, Baloo, and Bagheera.