"What? This is total news to me! It freaks me out," said neighbor John Baum.
"I was surprised too," said another neighbor, Francis Nonaka.
It was a shocker to folks in the typically quiet Haleiwa neighborhood.
Police said a pet was attacked and killed at a home on Paalaa Road.
"We've done many necropsies over the years and this is probably one of the worst, most severe cases we've ever seen," said Jacque LeBlanc from the Hawaiian Humane Society.
Neighbors said what was even more unreal was the person who called it in, the dog owner herself, 36-year-old Andrea Fiegle.
Neighbors said she was once homeless, but about a year ago, the homeowner, sympathetic to a mother and her young daughter, took her in.
"She seems very nice. Her daughter is as sweet as heck," said Baum.
"I would see dog walking the dog every so often. She seemed friendly, said neighbor George Woods.
At around 8 p.m. Sunday, police arrived, followed by the Hawaiian Humane Society, only to find Fiegle's dog Star beyond their help.
Authorities would only say a common kitchen item was the weapon.
"(Feigle) was disciplining her dog and killed it. So, we think this may end up being a felony level case," said LeBlanc.
"Dogs bark once in a while that's it," said another neighbor Ken Ige.
Neighbors told KITV they didn't hear anything unusual that night.
They said they knew Feigle worked cleaning homes; she even once cared for horses, and seemed to love her dog.
They said it all compounded a mystery that ended in such a tragedy.
"Strange. You never know now days," said Woods.
Police arrested Fiegle on one count of first degree animal cruelty.
The Hawaiian Humane Society said they will complete their necropsy and release the report to police on Tuesday.