A motorist driving on Belmar Boulevard in Wall on Thursday noticed movement in a garbage bag on the side of the road, officials said.
It was a live dog, covered in feces and ill, left to die an inhumane death.
The Cocker Spaniel was taken to the Associated Humane Society in nearby Tinton Falls, where the aging dog has been named "Morgan,'' Humane Society staff said.
"We at AHS are offering a $500 reward to anyone with information that leads to the arrest and conviction of the person responsible for treating Morgan in this unthinkable way," according to a release from the AHA. "We will keep the public updated on Morgan's progress as he begins the healing process."
For more information on Morgan, e-mail firstname.lastname@example.org or call the AHS at 732-922-0100. The Society is located at 2960 Shafto Road, Tinton Falls 07753. The Society is open 7 days a week for adoptions from noon until 4 p.m.