Dogs have this trouble, being the result of calculi situated in the bladder, kidney or urethra. Irritation and inflammation are caused by these foreign bodies, and also injure the mucous membrane, producing abrasions and superficial bleeding, the blood being passed with the urine. A blow across the back may also cause it. Upon pressing the dog's loins pain is evinced, and there is also a certain amount of irritation caused by passing the urine. Blood is sometimes mixed with the latter, or it may be passed independently of it. Give' 10 to 60 drops of liquid extract of ergot every four hours, and if the urinary passage is the seat of the injury, inject a weak solution of Condy's Fluid. The food should consist for a time of Bovine or beef tea, with egg and milk to drink. Under no circumstances administer a diuretic.