This section of the book is from the "Stories of Animal Sagacity" book, by William Henry Giles Kingston.
I must tell you of another dog which showed not only affection for a companion, but a wonderful amount of sense. He once broke his leg, in which state he was found by a kind surgeon, who took him home, set his leg, and after he had recovered allowed him to go away. The dog did not forget the treatment he had received, nor the person from whom he had received it.
Some months afterwards, he found another dog to whom the same accident had happened. By the language which dogs employ, he told his friend all about his own cure, and, assisting him along the road, led him, late at night, to the surgeon’s house. He there barked loudly at the door. No one came, so he barked louder and louder. At last a window was opened, and a person looked out, whom he at once recognised; and great was his joy when the kind surgeon, coming downstairs, opened the door. Wagging his tail, he made such signs as he was capable of using, to show what he wanted. The surgeon soon saw what had happened to his old patient’s friend, whom he took in and treated in the same skilful way. His former patient, satisfied that all was right, then ran off to attend to his proper duties.
Let us, from this kind dog’s behaviour, learn, whenever we receive a benefit, to endeavour, if possible, to impart it to others, and not to remain selfishly satisfied with the advantage we ourselves have gained.