Lame Deer Man Gets 18 Years in Prison for Attempted Child Sexual Abuse

A Lame Deer man will spend nearly two decades in federal prison after being sentenced in a case involving the attempted sexual abuse of a minor.

According to Acting U.S. Attorney Tim Racicot, 46-year-old Dean Allen Wallowing Bull was sentenced to 216 months in prison. After serving that time, he will also be required to complete a lifetime of supervised release.

Wallowing Bull Pleads Guilty to Attempted Sexual Abuse

Wallowing Bull pleaded guilty in October 2025 to one count of attempted sexual abuse. The case was presided over by U.S. District Judge Susan P. Watters.

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Abuse Occurred at Wallowing Bull’s Residence in 2009

Court documents show the incident took place in 2009 and involved a minor, identified as John Doe. According to investigators, the minor had been drinking with Wallowing Bull at his residence before falling asleep on a couch in the basement.

Minor Fought Back and Escaped After Being Physically Blocked

Documents state that the minor woke up and became aware of inappropriate contact. He attempted to leave the basement, but Wallowing Bull blocked the doorway. After returning to the couch, the minor later woke again to a similar situation and tried to leave once again. Authorities say Wallowing Bull physically prevented him from leaving at one point, but the victim was able to fight back and eventually get away.

Investigators Found Evidence of Intent to Commit Further Abuse

Investigators determined that Wallowing Bull intended to remove the minor’s clothing in order to commit further sexual acts. The case was built over time using evidence gathered during the investigation.

FBI, BIA, and Tribal Investigators Worked the Case Together

The case was prosecuted by the U.S. Attorney’s Office. The investigation involved several agencies, including the FBI, the Bureau of Indian Affairs, and Northern Cheyenne Investigative Services.

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18-Year Sentence Followed by Lifetime of Federal Supervision

In addition to the 18-year prison sentence, Wallowing Bull will remain under lifetime supervision once released. Officials say cases like this highlight the importance of reporting and investigating crimes involving minors, even when they occurred years earlier.