Dog urine or urinating dog
Dreaming about dog that is peeing or to see urine of dog in dream have few meanings. If dream is induced by internal stimuli, then it means that you need to use toilet, because of your bladder is full. It works as signal to avoid bed wetting.
External stimuli also can make you to dream urinating dog. Very often we are hearing sounds that are similar to peeing sound and that is reason why we have dreams about pee.
Third meaning is applicable when you are owner of a dog. Then peeing dog represents your worry that your dog might need to go outside to urinate. Also it represents your worry that dog is peeing all over the place.
Urinating dog can have sexual significance and denotes some kind of stress. Maybe you have fears related to sexual activity and urinating dog symbolizes that. Urinating dog acts also as symbol of relief. Maybe you have suppressed feelings and emotions and your mind is telling to release.