OMAHA, Neb. (AP) — A central Nebraska university being sued by the U.S. Justice Department for banning a therapy dog from student housing is seeking a protective order to prevent what it says is a fishing expedition by government attorneys.

An attorney for UNK says government attorneys are demanding more than 51,000 electronically stored documents regarding any person with a disability that sought any type of accommodation from UNK. The school says that’s overly broad and would cost it nearly $159,000 to produce and review.

The U.S. Justice Department sued the university and the University of Nebraska Board of Regents in November 2011, saying the university unlawfully denied Brittany Hamilton the chance to keep a 4-pound miniature pinscher named Butch in her university-owned apartment a mile off campus to cope with depression and anxiety.