They probably are trying to show possesion of you.If you have more than one boy dog they are probably trying to show dominance or THE PACK MEMBER THING.
Sometimes They can't hold it in.
Some Dogs Like to pee everywhere (Common in Male Dogs) and some prefer to pee in there own territory or safe enviroment...Hope This Helps
from their urethras the same as male dogs and ALL other mamals who urinate!
Dogs pee in their house to mark their territory.
When a do gets excited the jaw qiuvers, so it is not just the female dogs pee it's the excitment of the dog smell
Male dogs always do; female dogs usually croutch down on their rear legs but can also pee while standing if necessary.
Yes, this is a normal behaviour in adult male dogs. Sometimes male dogs that were neutered too early do not raise their leg to urinate, however.
Backwards, the same as the female. It's unusual in the mammal world. Usually the male urinates forwards.
I believe they will pee on any pee. All that matters is the smell to them.
Because dogs pee when they are excited.
Male dogs tend to lift up their legs and urinate off to the side, in all breeds.
maybe you can first try to pee in diapers first on the bed. Do this until you can always pee immediately and naturally when lying on the bed. Make it a habit and you will pee the bed when you take off the diapers. (think twice as it may not be easy to go back)