What piece is it that you are referring to
Personification and a surprise ending
The use of "Timothy" implies that Grandfather is merely taking his grandson to the zoo; however, the twist ending is that Timothy is a tiger. Suddenly the reason "no one would share a compartment with them" is all too clear-- no one would want to share a compartment with a large tiger.
1. With who and when are you playing Badminton?
2. What good qualities does your mother have?
3. Which color hair does he have?
4. Which movie genre do you want to watch today?
Explanation: