Theory:

     TIMOTHY, the tiger-cub, was discovered by Grandfather in the Terai jungle near Dehra.
 
     One day, when Grandfather was strolling down the forest path at some distance from the rest of the party, he discovered a little tiger about eighteen inches long, hiding among the intricate roots of a banyan tree. Grandfather picked him up, and brought him home. He had the distinction of being the only member of the party to have bagged any game, dead or alive.
 
     At first the tiger-cub, who was named Timothy by Grandmother, was brought up entirely on milk given to him in a feeding-bottle by our cook, Mahmoud. But the milk proved too rich for him, and he was put on a diet of raw mutton and cod-liver oil, to be followed later by a more tempting diet of pigeons and rabbits.
 
     Timothy was provided with two companions—Toto, the monkey, who was bold enough to pull the young tiger by the tail, and then climb up the curtains if Timothy lost his temper; and a small mongrel puppy, found on the road by Grandfather.
 
     At first Timothy appeared to be quite afraid of the puppy, and darted back with a spring if it came too near. He would make absurd dashes at it with his large forepaws, and then retreat to a ridiculously safe distance. Finally, he allowed the puppy to crawl on his back and rest there!
 
     One of Timothy’s favourite amusements was to stalk anyone who would play with him, and so, when I came to live with Grandfather, I became one of the tiger’s favourites. With a crafty look in his glittering eyes, and his body crouching, he would creep closer and closer to me, suddenly making a dash for my feet, rolling over on his back and kicking with delight, and pretending to bite my ankles.
 
     He was by this time the size of a full-grown retriever, and when I took him out for walks, people on the road would give us a wide berth. When he pulled hard on his chain, I had difficulty in keeping up with him. His favourite place in the house was the drawing-room, and he would make himself comfortable on the long sofa, reclining there with great dignity, and snarling at anybody who tried to get him off.
 
     Timothy had clean habits, and would scrub his face with his paws exactly like a cat. He slept at night in the cook’s quarters, and was always delighted at being let out by him in the morning.
 
     "One of these days,” declared Grandmother in her prophetic manner, “we are going to find Timothy sitting on Mahmoud’s bed, and no sign of the cook except his clothes and shoes!”
 
     Of course, it never came to that, but when Timothy was about six months old a change came over him; he grew steadily less friendly. When out for a walk with me, he would try to steal away to stalk a cat or someone’s pet dog. Sometimes at night we would hear frenzied cackling from the poultry house, and in the morning there would be feathers lying all over the verandah. Timothy had to be chained up more often. And finally, when he began to stalk Mahmoud about the house with what looked like villainous intent, Grandfather decided it was time to transfer him to a zoo.
 
     Reserving a first class compartment for himself and Timothy—no one would share a compartment with them—Grandfather took him to Lucknow where the zoo authorities were only too glad to receive as a gift a well-fed and fairly civilised tiger.
 
     About six months later, when my grandparents were visiting relatives in Lucknow, Grandfather took the opportunity of calling at the zoo to see how Timothy was getting on. I was not there to accompany him but I heard all about it when I returned to Dehra.
 
     Arriving at the zoo, Grandfather made straight for the particular cage in which Timothy had been interned. The tiger was there, crouched in a corner, full-grown and with a magnificent striped coat.
 
     "Hello Timothy!” said Grandfather and put his arm through the bars of the cage.
 
     The tiger approached the bars, and allowed Grandfather to put both hands around his head. Grandfather stroked the tiger’s forehead and tickled his ears, and, whenever he growled, smacked him across the mouth, which was his old way of keeping him quiet.
 
     He licked Grandfather’s hands and only sprang away when a leopard in the next cage snarled at him. Grandfather ‘shooed’ the leopard away, and the tiger returned to lick his hands; but every now and then the leopard would rush at the bars, and he would slink back to his corner.
 
     A number of people had gathered to watch the reunion when a keeper pushed his way through the crowd and asked Grandfather what he was doing.
 
     “I’m talking to Timothy,” said Grandfather. “Weren’t you here when I gave him to the zoo six months ago?”
 
     “I haven’t been here very long,” said the surprised keeper. “Please continue your conversation. But I have never been able to touch him myself, he is always very bad tempered.”
 
     “Why don’t you put him somewhere else?” suggested Grandfather. “That leopard keeps frightening him. I’ll go and see the Superintendent about it.”
 
     Grandfather went in search of the Superintendent of the zoo, but found that he had gone home early; and so, after wandering about the zoo for a little while, he returned to Timothy’s cage to say good-bye. It was beginning to get dark.
 
     He had been stroking and slapping Timothy for about five minutes when he found another keeper observing him with some alarm. Grandfather recognised him as the keeper who had been there when Timothy had first come to the zoo.
 
     “You remember me,” said Grandfather. “Now why don’t you transfer Timothy to another cage, away from this stupid leopard?”
 
     “But— sir —” stammered the keeper, “it is not your tiger.”
 
     “I know, I know,” said Grandfather. “I realise he is no longer mine. But you might at least take a suggestion or two from me.”
 
     “I remember your tiger very well,” said the keeper. “He died two months ago.”
 
     “Died!” exclaimed Grandfather.
 
     “Yes sir, of pneumonia. This tiger was trapped in the hills only last month, and he is very dangerous!”
 
     Grandfather could think of nothing to say. The tiger was still licking his arm, with increasing relish. Grandfather took what seemed to him an age to withdraw his hand from the cage.
 
     With his face near the tiger’s he mumbled, “Goodnight, Timothy,” and giving the keeper a scornful look, walked briskly out of the zoo.
 
~ Ruskin Bond
Reference:
National Council of Educational Research and Training (2007). A Tiger in the House - Ruskin Bond (pp. 58- 65). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.