Q. My dog scratches and bites and licks all the time. Its more on the rear area and his back legs and feet. Other dogs from this liter also have this.
A. The behavior you are describing indicates that your dog has allergies. These may be contact, environmental, or food allergies. I suggest having allergy testing performed to determine what he is allergic to. From there you can try to limit exposure (if possible) or you can begin allergy shots. A treatment regimen is also an option where antihistamines and steroids may help alleviate his itching. Have him seen by your veterinarian.