Jagger, the canine partner of Deputy Brad Manville, passed away at Kildaire Animal Hospital in Cary.
Jagger was diagnosed with cancer in December 2010, but fought through chemotherapy and was even allowed to return to work right up until his death because that was where he seemed happiest.
The dog served with the department for four years.
"Jagger had a unique disposition for a police dog," said Sheriff Donnie Harrison. "He could be playful and gentle around children one minute, but ready to catch the criminals the very next minute. The citizens of Wake County and I have been very fortunate to have such an excellent dog working for us."