Dangling modifiers modify nothing in particular in the rest of a sentence. They often seem to modify something that is implied but not actually present in the sentence. Dangling modifiers frequently appear at the beginnings or ends of sentences.

To revise a dangling modifier, often you need to add a subject that the modifier clearly refers to. In some cases, however, you have to revise the modifier itself, turning it into a phrase or a clause.

In the original sentence, was the dog reluctant, or was someone else who is not mentioned reluctant?

His grandmother was never a young boy.

Eyes cannot thumb through a magazine.