Given the task definition and input, reply with output. In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.

Title: Outcast Pug. Sentence 1: Sarah took her pug to a dog park. Sentence 2: But it had trouble getting along with other dogs. Sentence 3: One day, it was attacked and badly injured. Sentence 4: And it spent several days at a veterinarian.
Sarah had no choice but to keep her pug away from other dogs.