YARMOUTH (CBS) – Nero, the police K-9 wounded in a shooting that left Yarmouth Police Officer Sean Gannon dead, is back on his feet and improving after surgery.

The officer and his K-9 partner were shot as a group of police officers served an arrest warrant at a home on Blueberry Lane in Marstons Mills Thursday afternoon.

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Injured police dog Nero continues his recovery after being shot while Yarmouth Police were serving a warrant. (Image Credit: Barnstable Police K9 Foundation)

Gannon did not survive. Nero was rushed into emergency surgery and has been recovering since.

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Yarmouth Police posted Sunday morning that their “four-legged hero” is “back on his feet… fighting back and standing strong.”

Officer Sean Gannon and his K-9 Nero in 2017. (Image Credit: Yarmouth Police Department)

Later in the day, the Barnstable Police K9 Foundation shared photos of Nero. Police said Nero is “progressing with his recovery each day.”

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On Sunday, Nero walked down the hallway and ate a bit on his own. The K-9 is under 24-hour law enforcement coverage.