Police have launched a public appeal for information over the theft of a dog statue in Sydney's south-west late last year.

The bronze statue depicts a Labrador Kelpie cross named Caesar, who served in the Vietnam War for three years.

The statue was erected in 2016 to celebrate the 11 local tracker dogs who saved the lives of their handlers during the war.

The alleged theft was caught on camera about 2.10am on Thursday 12 December 2019 at Edmondson Park train station.

NSW Police have released CCTV footage of the pair they would like to speak to over the incident. (NSW Police)

They are described as a man and woman of medium build aged in their 20s. (NSW Police)

Investigators have released CCTV of the suspects, a man and a woman, who are seen pulling into the station carpark on Croatia Avenue in a silver sedan.

The pair got out of the car and walked off, returning a short time later.

After numerous attempts, the man managed to remove the statue and place it into the boot of the car.

Despite numerous inquiries, police have been unable to find the statue of Caesar and are calling on members of the public to come forward.

The man is described as being of medium build with short dark hair and an unshaven appearance. He is believed to be aged between 20 and 30 and was wearing a red hoodie and black tracksuit pants.

The life-sized statue of 'Caesar' was erected in 2016 to commemorate local war dogs who served in the Vietnam War. (NSW Government)

The woman is described as being of medium build with brown hair tied in a bun. She is believed to be aged between 20 and 30 and was wearing a white long-sleeved jumper and dark pants.

The car is described as a silver Toyota sedan fitted with a tow bar. The car would have had damage to the rear bumper bar.