Neither the dog nor the cats were frightened by the delivery truck from the florist.
Here's why:
* Proper Nouns: "Florist" is a common noun, but since it refers to a specific florist, it should be capitalized.
* "The" before Proper Nouns: You always use "the" before a proper noun that is specific. In this case, "the delivery truck from the florist" implies a specific truck.
* "Nor" and "Neither": These words are not typically capitalized unless they are at the beginning of a sentence.