The kidney helps the body maintain a sufficient level of important substances such as water, minerals and B vitamins. Without it's assistance, these substances would escape the body and as a result, dogs with kidney disease can become dehydrated and develop certain vitamin deficiencies.

Physical signs of kidney failure

The following signs may be indicative of kidney failure.

• Excessive drinking
• Increased urination
• Lethargy
• Vomiting
• Bad breath
• Not eating for more than one day
• Weakness or lack of coordination when walking
• Depression
• Weight loss or wasting of muscle tissue

Notify your vet if you see any of these signs in your pet.

Chronic renal failure

The most common type of canine kidney problem is chronic renal failure. As the kidney controls levels of metabolic breakdown products, electrolytes and other products of metabolism in the blood by excreting excesses in the urine. When the kidney fails, these substances can build to damaging levels.