Types of Kidney Stones. Occasionally, high levels of chemicals in the urine form into crystals. Eventually these crystals become large enough to form stones in the kidney, a condition called nephrolithiasis. Stones (calculi) may also form in the ureter or the bladder.
Ear infections usually begin with inflammation of the outer ear canal, caused by bacteria or yeast. But, ear infections in dogs can be caused by food allergies, parasites, foreign bodies, trauma, excess moisture in the ear or hereditary conditions. If you think your dog has an ear infection, take him to the vet for treatment. Then learn how to prevent ear infections and properly clean your dog's ears.
One of the first signs that an ear infection is present, is the dog shaking his head and scratching excessively at his ears. Otitis (inflammation of the ear canal) is usually accompanied by redness of the ear flaps. Often the sign of an underlying ear problem can be extremely subtle, such as a very slight tilt of the head, or one ear being held at a slightly different angle than the other. An odor that emanates from the ears is another tell-tale sign.