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Spotify Without a doubt, the most famous police K9 on the internet! Mark Tappan and K9 Mattis almost won America’s Top Dog in 2018, blowing away the judges with a big splash in the pool. Mark and Mattis have done more than police work, they have reinvented community relations between the public and the police. Find out how Mattis became an internet sensation, and why Mark wrote two books about his dog.
Find both books here on Amazon and on our Book Page. To follow K9 Mattis, check out the links below.
https://www.tiktok.com/@k9_mattis
