A netizen posted this upsetting sight outside a unit at Block 607, Bedok Reservoir Road.
According to the netizen, the dog in the photo had been left outside of his owner's house while the family went on a holiday.
The netizen was concerned about the dog's health as it appeared weak and skinny. It is understood that some people have come forward to feed the dog in the absence of its owner.
The Society for the Prevention of Cruelty to Animals (SPCA) and police have been called in.
The netizen also faulted the neighbor of the dog owner, who chased away the netizens from the premises when they tried to help the dog.