Shortly after 11.45pm on Thursday 27 July 2017, police were called to reports of a robbery at Addison Close, Ardwick.
At around 11pm, the robber approached a man outside his home and grabbed his pet dog and ran.
The owner chased after him, but the robber was joined by a second offender. The owner was threatened with a knife before both fled with the four-month-old Chihuahua.
The robber has been described as a tall, skinny, white man. He was wearing a blue bomber jacket, grey sports trousers and a hoodie. He also had a scarf around his face.
The second offender has been described as a tall, skinny, white man, wearing black clothes.
Officers have now released images of Dalai are appealing for the public’s help to trace him.