What animals live in the bolt-holes?

The term "bolt-holes" is not a standard term used to describe a specific habitat for animals. It is possible you meant a different term, or perhaps you are referring to a specific location with a unique name.

To help me understand what you are asking, please tell me:

* What is the context of "bolt-holes"? Are you reading a book, watching a movie, or referring to a specific place?

* What kind of animals are you interested in? Are you looking for specific types of animals, or are you open to any?

Once I have more information, I can give you a more accurate answer.