Their bladder tells them "it's time"
Yes, all dogs urinate.
Urinate.
Yes.
they don't urinate on their food or drinking water
Dogs urinate, defecate and respire, these are all forms of excretion.
no
Their scent.
Yes you can, such as a cat has a litterbox. Only you'll have to train it to urinate in that place.
from their urethras the same as male dogs and ALL other mamals who urinate!
The dog maybe a diabetic
Yes. They wee several times a day.
they dont