It is possible to bring your pet dog or cat with you to Beijing. However, usually only one pet per adult passport is allowed. 

    Big or small size of dog is not a big problem, the dog restriction limitation and registration fee vary dependent on different location of the city, mainly is based on where you live. If you have a dog bigger than 35cm high, the best is live outside fourth ring road of Beijing. You still can live inside Fourth ring Road, but you need to establish a good relationship with the local people around your house.

    You will also need to have your pet's health certificate approved by your country's appropriate government bureau.

    The pet need to be quarantined 45 days before you can take home with you, but you can ask for doing the quarantine period at home as long as you are agree to pay the quarantine fee. At the 45th day an officer or animal inspector will come to check the animal if it is healthy or not.
It is easy to have the pets and get the pet food in many supermarkets. There are several veterinary hospitals around Beijing..
PETS IN BEIJING
REGISTRATION PROCEDURES
Public Security Bureau （office for dog registration）
Chaoyang District-Tel: 8595-3400
Dongcheng District:-Tel: 8408-1110
Health and Quarantine Station of China （Exit Permits）
Add: 9 Ma Dian Lu, Haidian District
Tel: 8226-1919/1915
VETERINARIANS