BUSHWICK, BROOKLYN — A dog on the L train tracks was the cause delays on the Manhattan-bound line Monday morning, according to transit officials.

The canine commuter was spotted on the northbound tracks between the Jefferson and Montrose Avenue stations in Bushwick at about 3:40 a.m. Monday morning, said an MTA spokeswoman.

Trains was stalled so that the NYPD could jump onto the tracks and rescue the pup, according to the MTA.