what are the signs and symptoms of kidney failure in dogs?
['Urinating more often – urine will usually be very diluted.', 'Increased drinking to replace lost fluids.', 'Nausea and vomiting due to build-up of toxins.', 'Retching or going off their food.', 'Tiredness and lethargy.', 'Weight loss.', 'Pale gums.', 'Mouth ulcers.']