It is sometimes normal if they have been pregnant for a while.
yes
I don't know about a pregnant dog, but urine leakage is a sign of diabetes, get a bottle of diastix glucose test strips and test her urine.
yes, some women have the same problem, due to the pressure of the babies it can cause a tear in the bladder.
Yes
The kidney is "designed" to 1) not leak proteins and 2) to reabsorb any that do get into the urine.
Usually concentrated because of dehydration
Yes. Reasons are few though, if they leak more than a drop or two then perhaps you are undergoing an hormone imbalance, otherwise it happens to some women which should be normal and it lasts two to three days. Better yet see a doctor to be sure.
You'd have to give birth to young first before you produce or leak milk.
No, it's not normal to have blood in your urine during your period. If you are using external menstrual products like pads, or internal products like tampons or softcups that can leak, then blood lingering around the vaginal opening or vulva will be washed off by urine as you urinate and so there will be blood in the toilet bowl. If there is blood in the urine itself, not from menstrual flow, then it is a sign of a urinary tract infection (common if you use commercial menstrual pads such as Always or Kotex) and you should talk to your doctor.
Yes. However your breasts are leaking Colostrum or pre-milk and not breastmilk. Breastmilk doesn't arrive until a day or two after the baby is born.
It's probably colostrum, or "pre-milk." It's not just common; it's normal. Not sure why you notice it at night, though. It could be your sleeping position.
In my experience, breasts do not leak until after you have given birth and are actively breastfeeding.