Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Dog Medicine Is Recalled at Request of F.D.A. A time-released medication used to prevent heartworm in millions of dogs was recalled after thousands of dogs suffered adverse reactions.

Sci/Tech