Hello!! This is a great review. I have a few suggestions. Hopefully they will help.
In the second sentence, I would change it to "the beginning of Tarzan's life."
When mentioning their pack, you could change it to, a group in which they live together.
Talking about Shere Khan is a tiger which hunts, change it to Shere Khan is a tiger WHO hunts
The past tense of swear, is swore. It will sound better if you change has sweared to swore.
When saying, the other animals in the jungle were agreed, you don't need to have the were. Agreed is past tense by itself.
He killed Shere Khan by burning it.. change the it to him.
When saying afraid with fire, it sounds better to say, afraid of fire.
In the last sentence of the first paragraph, change the go to went. If the beginning of the sentence is past tense, make sure that they end of the sentence is past tense.
In the first sentence of the next paragraph, you can put a comma after interesting, because the "because" in the sentence is used to connect the two sentences together.
When saying, like Shere do towards Moghli, instead put "does."
When saying, recommend this book to person, make sure to put an article before the word person. An article is a, an , or the. I would say a person. When saying, a person who like, make sure to say likes
In the last sentence, it would flow better if you said, It is also suitable to be used for story telling ....
Hope this helps!