ROSENMOGRA: Yes, truly the dog will feel "mental stress" and may be in "trauma" after the owners leave. I appreciate your feelings and advice on solving the issues of this dog.
Since it appears you have such a great deal of love and feelings for animals, could you from your kind and loving and sympathetic heart advise the feelings of the hundreds of thousands of workers who live here, away from their families and loved ones for years on end? The situation becomes all the more painful when such workers are unable to attend important functions such as marriages or festivals in their home country. Add to this the non-payment of salaries to such workers for months on end by some unscrupulous employers. How do they manage to survive? And they are humans. I believe you have not gone through such situation and are unable to fathom the depth of sorrow and sadness, pain and misery, anguish and anxiety of these human workers here.
Working in a Middle East country comes at a cost. To earn much, you need to sacrifice much. Humans can understand. Animals cannot. They too adapt to the changing situation. I am confident the owners who are animal lovers, were definitely in that salary bracket which allows them to take their pet with them when they move out..
Alternatively, I just wish the dog finds a new home here. He will still feel the "mental stress" and the "trauma" when the owners are no longer present.