How does the horse serve as a true friend and companion to Iona?
When Iona realised that no body was listening to him and that he had no body to go to to grieve at his loss, he turned to his horse. He tried to talk to his passengers, the officers, the drunkards and the young cabdriver, about his son; how he fell ill, what did he say before he died. It was about to be a week since the mishap and the Cabby had had no body to talk to so far. Finally, he decided to go to look after his horse. It was unbearably painful to him to picture his son when he was alone. So he tried to keep himself occupied. He offered hay to the little horse as that was all he could as he had no corn as he did not earn much for he had lost his young son, he explained it to the horse. Iona's feelings were too much for him. The driver goes on explaining the whole story of his son to the horse, while the horse listened patiently and breathed over his master's hand like a true mate.