What made Grandfather decide to transfer Timothy to the zoo?

When Timothy was about six months old, he became less friendly. Once when he went out for a walk with the author, he tried to creep away to follow a cat or someone’s pet dog. Sometimes at night he went to the poultry farm and furious crackling sounds came from there. And in the morning, feathers could be seen lying all over the veranda. And finally, when he began to eye Mahmoud in the house, his wicked intentions could be seen so Grandfather decided to transfer Timothy to the zoo.

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