Q: 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: Glenn bought his cats a feather toy. Sentence2: The cats seemed to love when Glenn played with them with the toy. Sentence3: Eventually, though, they stole it and hid under the bed with it. Sentence4: When Glenn finally retrieved the toy, the cats had torn it apart. Sentence5: He had to get them a new one the next day.
A:
Cats, Glenn