Excessive drinking and urination in dogs signals underlying disease requiring systematic investigation, as multiple serious conditions share these signs.
Dogs with undiagnosed PU/PD may experience the discomfort of constant thirst, interrupted sleep from nocturia, and the stress of inappropriate elimination punishment. The underlying conditions themselves cause suffering - diabetic dogs experience osmotic distress, Cushingoid dogs have muscle weakness and pot-bellied discomfort. Early investigation prevents avoidable deterioration and restores quality of life more rapidly.