Urolithiasis is the medical term referring to the presence of stones in the kidneys, bladder or anywhere in the urinary tract. Struvite -- the primary composition of these stones -- is a material that is comprised of magnesium, ammonium and phosphate. The stones are more common in female dogs than in male dogs, and typically in animals that are mid-range in years (six to seven years of age). Struvite stones account for more than one-third of all stones found in the urinary tracts of dogs.
While some dogs may not display any symptoms, others have urinary problems such as:
Moreover, increased thirst (polydipsia) is usually associated with stones present in the kidneys. If there is a substantial amount of inflammation, the bladder could be enlarged. Sometimes, you'll be able to feel the actual stones through the skin with your hand.
There are several known risk factors including high levels of steroids, an abnormal retention of urine, and extremely non-acidic (alkaline) urine. These type of stones are also more common after urinary tract infections or disorders. Some breeds of dogs are more prone to stuvite stones, including:
X-rays and ultrasounds are usually used to determine the size, shape and location of the stones, and to properly assess treatment options.
A medical condition involving excessive thirst
Blood in the urine
Having a hard time urinating; pain while urinating