Grandfather takes Toto to Saharanpur because Toto is very mischievous and does not let the other pets or household members sleep at night. Grandfather needs to go to Saharanpur to collect his pension and cannot leave Toto behind as a secret from Grandmother, so he takes Toto along in a big black canvas kit bag to keep him secure during the journey. The ticket collector insists on calling Toto a dog because, according to railway rules, monkeys do not have a specific fare category. The collector decides to classify Toto as a dog to charge a fare of three rupees for him. The ticket collector cleverly applies the rule that only dogs require a ticket and fare, and since no rule exists for monkeys, Toto is considered a dog for fare purposes, much to Grandfather's annoyance. Grandfather even tries to argue by presenting a tortoise, which the collector exempts from charge, saying, "It is not a dog".