Detailed Instructions: In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Q: Sentence1: I let all my dogs out back in the morning. Sentence2: About an hour later I went out there to check on them. Sentence3: They were missing! Sentence4: I went out front to look for them. Sentence5: They were all there by the front door.
A:
I (myself), Dogs, Dog