Dogs can suffer from nearly all the common urinary problems, disorders and diseases as people. If a dog is not walked on a consistent regular schedule, over a long period of having to hold in its urine, it may develop a number of kidney problems with possible kidney (renal) failure as a consequence. Also similar to people, dogs are at an increased risk of urinary tract infections from having the urine and bacteria accumulate in their bladder for a long time before removing the waste.
Dogs may experience inability to hold their urine if the sphincter muscle that holds in urine becomes weak, allowing leakage. Urinary incontinence is common in older female dogs of large breeds, especially Doberman Pinchers. This is often confused by dog owners as lack of patty training by the dog, but it can be more serious and may require immedicate treatment before the problem becomes worse.
Just as with people, as dogs age, they can form kidney stones in their urinary tract, causing irritation, urinary blockage, or difficult and painful urination. Watch for blood in dog urine - a condition called hematuria or general signs of discomfort in your dog during peeing. Kidney stones are curable if treated. If left untreated they can lead to complications such as even possible kidney failure and death. Watch for chronic cloudy urine as it can be an early sign of a kidney stone.
If a dog experiences problems, it can misbehave. Don't interpret the new behavior as lack of discipline. Your dog may be trying to communicate something to you or is dealing with frustration.