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you can train it to pee outside
Trust your German Shepherd with your life. Incredible dogs, won't see you hurt if they can stop it with their own flesh and blood.
Stick a cork in it...
to stop peeing on your floor?
You can get the male dog neutered, this should stop him from urinating in the house as much as he did.
Keep it outside.
A German Shepherd can keep the same pace a lot longer than human. If a person can run an hour non stop so can a German Shepherd, easily. That articular breed just wouldn't stop out of tiredness, they would run along side their master as they would in the wild after their alpha.
When they stop peeing and pooping in your house or anywhere they aren't supposed to.
You cannot get a guinea pig to stop peeing on you. They cant help it.
Take them out every 2 or 3 hours so they won't have to go anymore.
throw it away.