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.

Sentence1: Charles thought it would be fun to wash the family dog. Sentence2: As long as the dog didn't shake water on him, this would be cute. Sentence3: Charles put their dog in the tub and rinsed him with warm water. Sentence4: The dog didn't shake. Sentence5: Charles lathered the dog and then he shook soap everywhere.
Charles, Dog