Lame Deer man sentenced to 18 years in prison for attempted sexual abuse

BILLINGS - A Lame Deer man who attempted to sexually abuse a minor was sentenced today to 216 months in prison to be followed by a lifetime of supervised release, Acting U.S. Attorney Tim Racicot said.

Dean Allen Wallowing Bull, 46, pleaded guilty in October 2025 to one count of attempted sexual abuse.

U.S. District Judge Susan P. Watters presided.

The government alleged in court documents that in 2009, Wallowing Bull and John Doe, a minor at the time, were drinking together at Wallowing Bull's residence. Doe eventually fell asleep on a couch in the basement. When he awoke, he could see Wallowing Bull laying behind him and felt him reaching over Doe's stomach toward his crotch. Doe got off the couch to leave, but Wallowing Bull blocked the doorway. Doe returned to the couch and fell asleep again.

After approximately 15 minutes, Doe awoke to find Wallowing Bull laying behind him again and reaching toward his crotch. When Doe tried to get off the couch to leave, Wallowing Bull pinned him to the couch to prevent him from escaping. Doe fought back and Wallowing Bull eventually allowed Doe to exit the basement. Evidence gathered throughout the investigation established that Wallowing Bull intended to remove Doe's clothing in order to have anal or oral sex with Doe.

The U.S. Attorney's Office prosecuted the case. The investigation was conducted by the FBI, BIA, and Northern Cheyenne Investigative Services.