How To Tell If Mastiff Pregnant?

Signs of pregnancy in all dogs including Mastiff are same. Pregnancy in dogs can last for an average 63 days. Early signs of pregnancy in dogs appear after 3-4 weeks of breeding. These are lack of interest in eating, nipple enlargement, decrease in the activities and some behavioral changes. Some late signs are weight gain and increase in appetite. At the advance stages you can note

1. Puppy movements
   
2. Increase in abdomen size
   
3. Nesting behavior
   
4. Milk production are seen in dogs

You can also take your dog to vet who confirm pregnancy by ultrasound or physical exam.