Sophie is believed to be a Yorkshire or Silky Terrier. She is perceived to be nice at the beginning of the movie, but proves to be as cold-hearted as Claudia.
Acts of her cruelty include:
- Ripping Klaus Furschtein's designer socks.
- Popping Klaus's floating pool chair for him getting water on her.
She seems to only have sympathy for Claudia, and very little for Klaus.
Sophie was voiced by Frank Welker.