9. Neapolitan Mastiff
This dog is given a very strange appearance because of the amount of loose skin that folds over their face. They have these wrinkles all over their body but they are most prominent on the face and head. These wrinkles actually involve extra care as owners need to clean in-between the folds in order to prevent acne and infection. These dogs have a very formidable appearance and it is for that reason that a Neapolitian Mastiff was chosen to play Fang in Harry Potter.