The bones turned up in Saddle River County Park in Glen Rock late Saturday afternoon, after most parks in New Jersey were reopened amid the coronavirus pandemic.
Borough police responded, along with Bergen County sheriff's officers.
The sheriff's Bureau of Criminal Identification took photos and collected the remains.
The Bergen County Medical Examiner's Office made the call shortly after 8 p.m. that they were animal remains.
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ALSO SEE: A rash of water mishaps up and down the Jersey Coast continued Saturday with a search for a missing kayaker less than 24 hours after a boater -- and moments before two other people had to be rescued.
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