The Middle East Airlines pet policy is as follows:
Cats and dogs are permitted onboard whenever country regulations permit.
Only pets weighing 7kgs or less may be accepted in the cabin and placed under the seat in front of the passenger. The weight of the pet and container should not exceed 10kgs provided that the Maximum size of the container is L= 40 cm, W= 24 cm, and H= 24 cm and that they are reserved in advance .
Taking a pet to a foreign country involves preparation and planning far in advance of your departure date. Requirements for pet travel to a foreign country are set by the destination country. If you are you traveling to another country and bringing along your pet you’ll need to meet the animal health requirements of the country you are visiting.
More information on the Middle East Airlines pet policy