Why was Toto's presence kept a secret?
- Because he was very mischievous.
- There was no space in the house for new pets.
- The grandmother was scared of pets.
- He would have been harmed by other pets in the house.
Toto’s presence was kept a secret as the grandmother was scared of pets. The phrase in the chapter that "Grandmother detested animals whenever she spotted one within the house, she would scream.
The youngster and his grandfather came to the conclusion that Toto's presence must remain a secret." underline the fact that the grandmother feared animals.
As a result, nobody knew that Toto the monkey was there.