The series has faced a massive wave of fan backlash and declining viewership due to several major behind-the-scenes events: 1. The Firing of John Reardon
, the beloved German Shepherd who played Rex for the first six seasons and the start of Season 7, was humanely euthanized in August 2024 after a battle with cancer. The role was taken over by his nephews and cousins. 3. Season 8 and 9 Upheaval Hudson & Rex
During Season 7, lead actor was diagnosed with tonsil cancer. He took a leave of absence to undergo successful medical treatment. Upon receiving a clean bill of health and being cleared to return to work, Reardon stated that the production team informed him they were "going in a different direction" and essentially let him go. 2. Death of the Original Canine Star The series has faced a massive wave of