The narrator treats the dog Tricki with great care and concern throughout the story "A Triumph of Surgery." The following points explain how the narrator treats Tricki.

Introduction
The story "A Triumph of Surgery" is written by James Herriot, a well-known veterinary surgeon. The story revolves around a dog named Tricki, who is obese and has various health issues.

Concern for Tricki's Health
The narrator shows great concern for Tricki's health. When Tricki's owner brings him to the veterinary surgery, the narrator examines him thoroughly and diagnoses him with obesity. The narrator explains to the owner how Tricki's obesity is causing various health problems and suggests a strict diet for him.

Personal Attention
The narrator personally takes care of Tricki during his stay at the surgery. He puts Tricki on a strict diet and exercises him regularly. The narrator also takes Tricki for walks and monitors his progress closely.

Professionalism
The narrator demonstrates his professionalism by explaining the importance of a healthy diet and exercise to Tricki's owner. He also advises the owner on how to take care of Tricki's health in the future.

Conclusion
In conclusion, the narrator treats the dog Tricki with great care and concern throughout the story. He goes above and beyond to ensure Tricki's health and well-being. The narrator's professionalism and personal attention to Tricki's health make "A Triumph of Surgery" an inspiring story of dedication and compassion.