In a disturbing sequence of events emerging from Arizona, two instances of alarming violence include both human and animal victims, with the alleged perpetrators now facing the legal repercussions of their actions. In Scottsdale, a case that was not initially prosecuted for animal cruelty has recently surfaced, in which Matthew Dierenger, described by police as "charismatic" and "manipulative," is now accused of a Scottsdale man's murder, having first drawn attention for his alleged brutality towards a dog last summer, as reported by FOX 10 Phoenix. Meanwhile, in Marana, tragedy struck as 29-year-old Taton Dorfman was arrested after a welfare check led to the discovery of his girlfriend, 30-year-old Hannah Rogers, and a dog, both found deceased by the Marana Police Department, with details provided by 12 News.
The previous dog assault, according to a FOX 10 Phoenix interview, involved Dierenger allegedly picking up and slamming a dog named Mateo to the ground, an event that left Mateo with a traumatic injury and declining health leading to his eventual euthanasia, Kim Shedd, Mateo's owner, expressed a deep sorrow, stating "It was so hard because I couldn't understand; it was hard because knowing someone else was the reason why I couldn't enjoy this last moment, but it was because of someone else" Mateo's medical records, which Shedd claims were dismissed by the police, charted an emergency visit with treatments for "traumatic injury" and "back pain." However, the Maricopa County Attorney's Office did not pursue animal cruelty charges, given no certainty of conviction and no proof of injury that met the felony criteria; instead, the recommendation was for misdemeanor charges of disorderly conduct.
Dorfman's arrest in Marana unfolded after a several-hour standoff with a SWAT team. His eventual arrest revealed that he faces murder and animal cruelty charges. In the brewing shadow, tragedy echoes like the one involving Dierenger, whose criminal record, unearthed by the Scottsdale Police, shows a 2020 Colorado case of animal cruelty where Dierenger pleaded guilty and received an 18-month prison sentence. Despite his history, lack of charges in Shedd's case left a chilling gap with Dierenger only receiving a probation for theft in April 2025, which he violated, however, he was not located until after the murder of Frank Quaranta, with whom he was living after meeting at a church heat relief center; Dierenger is currently being held on a $2 million bond for Quaranta's murder.
