Patrol, K9 and ESU officers found the injured dog under the train on Friday.
All worked together to remove the cold and injured dog without further trauma.
They stabilized the canine and rushed it to an appropriately suited K9 vehicle for its transport to an animal hospital.
"Now this pup has promising potential for a full recovery and a good reminder to keep off the tracks," NJTPD said.
Click here to follow Daily Voice Essex and receive free news updates.