Rikki-Tikki-Tavi

"Rikki-Tikki-Tavi" is a short story in "The Jungle Book" (1894) by Rudyard Kipling about the adventures of a brave young mongoose. 
The story is a favourite of Kipling fans and is notable for its scary and serious tone. It has often been added to literary collections and has also been published more than once as a short book in its own right. The story was also adapted into an animated TV special by American animator Chuck Jones in 1975.