But what is that book that she is swearing on?

“Hatty is 2 years old and was trained by inmates at a prison in southwestern Illinois. She stood on her hind legs and placed her paw on a law book as an oath was administered Tuesday.”

• Sophie Lewis CBS News https://www.cbsnews.com/news/comfort-dog-sworn-in-at-states-attorneys-office-to-help-victims-of-sexual-assault-and-violence/