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Polk County Sheriff’s Office K-9 Dies

By Bill Dubensky Feb 9, 2026 | 11:10 AM

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(KNOX) – The Polk County Sheriff’s Office said that K-9 Rex passed away.

K-9 Rex recently became very ill and was diagnosed with Lyme disease and was in kidney failure.

To relieve K-9 Rex from suffering, the decision was made to put Rex down.

Rex was a 7-year-old Belgian Malinois/German Shepard mix and had been a member of the Polk County Sheriff’s since 2021.

Rex worked and lived with his handler.

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