K9 Mattis – Brown, Wisconsin

Died – 1/19/24
Handler – Deputy Nick Dennis

Brown County Sheriff’s Office announces death of K9 after days-long medical battle

A Brown County Sheriff’s Office’s K9 has died after a three-day battle with “serious medical issues.”Officials announced the death of K9 Mattis “with the heaviest of hearts” on Facebook Friday evening.On Tuesday, the Sheriff’s Office posted that Mattis “fell ill quite suddenly” over the weekend and was taken to Madison, where he had been “receiving advanced medical care.”A sincere thank you to the staff at Madison Veterinary Hospital who worked tirelessly to help Mattis overcome illness. Our thoughts and prayers to Deputy Dennis and his family. Mattis will be greatly missed by his Brown County family. Rest easy Mattis, we’ve got it from here.Mattis and his handler, Deputy Nick Dennis, comprised one of Brown County’s six K9 teams. Mattis was a dual-purpose Belgian Malinois born in 2016 who specialized in patrol and narcotics detection.

Submitted By Jim Cortina

James A. Cortina has been involved with police dogs since 1972 and currently on the Board of Directors for the Connecticut Police Work Dog Association Inc. Jim has been appointed as Treasurer since its inception in 1991. Jim is one of the charter members of the C.P.W.D.A. organization. Since 1975 he has been a certified professional dog trainer and received his Master Trainer Certification in 1985. During his career he has provided armed K-9 strike crowd control for security agencies in Connecticut and out of state security companies. In conjunction with other members of the Connecticut Police Work Dog Association Inc. Board of Directors, he helped to draft Connecticut Statute 53-247(e) "Intentional Injury or Killing of Police K-9" which was passed by the Senate in 1993 and also assisted in implementing the prestigious Daniel Wasson Memorial K-9 Award in 1992. In 1993 he helped coordinate the North American Police Work Dog Association Nationals in New London, Connecticut. He was appointed Training Director for the New London County Work Dog Association from 1985-1987. He performed decoy work for Connecticut Police Work Dog Association Inc. in police K-9 demonstrations, trained several local police department canines, and coordinated training workshops for out-of-state police departments. He participated in the United States Police K-9 Association Trials in Croton on Hudson, New York in 1985 as a decoy. He is an avid photographer and received photography awards in 1989, 1990, and 1991 and currently takes photographs for the Connecticut Police Work Dog Association Inc.