Christopher Boone–Toby relationship

Christopher Boone–Toby relationship is a bond of companionship and responsibility that becomes especially visible when Christopher is away from home. Toby is not merely something Christopher carries along: Christopher searches for him when he goes missing, risks his safety to retrieve him, and later gives him a burial. The relationship is threaded through Christopher’s flight, his reunion with his mother, and the loss that follows.

Companionship and care

When Christopher leaves home, he takes Toby out of his cage and puts him in the pocket of one of his coats. The cage is too heavy to carry all the way to London, so the change of container is a practical response to the journey rather than a decision to leave Toby behind. Toby travels with Christopher as he sets out for school and then toward the station, dependent on Christopher to keep him safe and provide for him.

At the station, Christopher realizes Toby is missing. He is worried that the rat could die without anyone to feed him, or be run over by a train. The concern is concrete and immediate: Christopher knows Toby is away from both his father’s and his mother’s home, and sees himself as responsible for what happens to him. Once there are only three people in the station, Christopher searches the area, including its doorways and the space below the platform.

The search at the station

Christopher eventually spots Toby among the tracks. He recognizes him by his white fur and the brown, egg-shaped marking on his back. Toby is eating an old sweet wrapper. Christopher climbs down to reach him and calls his name, holding out his hand so Toby can smell him. When Toby runs away, Christopher follows and tries again to catch him.

The search puts Christopher in danger as a train approaches. Toby runs past his feet, and Christopher catches him by the tail; he then lifts the rat in both hands as the train comes out of the tunnel. Christopher is unable to climb back onto the platform while holding Toby. A man grabs Christopher and pulls him up onto the concrete. Christopher returns to the bench and puts Toby into the inside pocket of his jacket, where the rat becomes quiet. Asked what he was doing, Christopher explains that he was looking for Toby and identifies him as his pet rat. The episode shows the strength of Christopher’s attachment through his determined effort to recover Toby, while also making plain the hazards of trying to care for a small animal in an unfamiliar, busy place.

Life with Christopher’s mother and Toby’s death

After Christopher and his mother return to Swindon, Toby remains part of Christopher’s life. Later, Toby dies at two years and seven months old, an age Christopher describes as very old for a rat. Christopher wants to bury him, but his mother has no garden. He therefore buries Toby in a large plastic pot filled with earth, like a plant pot. When Christopher asks for another rat, his mother refuses because the room is too small.

Significance of the bond

The relationship is conveyed less through abstract declarations than through acts of care: carrying Toby when the cage is impractical, searching for him when he disappears, and finding a way to bury him when a garden is unavailable. Toby’s dependence makes Christopher’s care visible, while Christopher’s conduct shows that companionship entails responsibility even during a frightening journey. The eventual death and the refusal of a replacement leave the bond with a definite ending; the pot of earth becomes the setting for Christopher’s farewell, shaped by the limits of the home he shares with his mother.