my pembroke welsh corgi is pregnant at the moment and she could be due in like 2-3 weeks i would say. her nipples have grown tremendously and i was wondering if it was normal to have almost like a scab like peal around all her nipples.. i could just rub them and it comes off but i am so confused at what it actually is. me and my boyfriend think it could possibly be scabs from the growth. can anyone help me ?