How does he treat the dog?

Explanation

The doctor gave Tricki no food, but plenty of water for two days. Slowly, the dog started showing interest in his surroundings and began mixing with the other dogs at the surgery. On the third day, the doctor saw Tricki licking the empty supper bowls of the other dogs. Next day, a separate bowl was kept for it and the doctor was pleased to note that Tricki had run to eat its food with enthusiasm. From that day onwards, its progress was rapid. It did not require medicinal treatment of any kind and recovered quite well at the end.