Duke saw a deer near his home in Byron and decided to give chase. Owner Chriss DeValder hasn't seen her boy since.
"I just don't know what to do without him," she said.
She said he may have been spotted in Oakfield.
He's also not good with other dogs, she said.
She asks that people call or text if they see him, or "call out Duke." She can be reached at (585) 409-9325.