The present work included 30 dogs and 10 cats submitted to the faculty clinic. The animals were examined physically and the suspected urinary affected animals (14 dogs and 3 cats) were subjected to radio- and sonographic examinations. The diagnosed diseased cases (7 dogs and one cat) were chronic non-suppurative nephritis, peri-renal cyst, cystic kidney, renal calculus, urinary bladder calculus, cystitis and diffuse peritonitis. It was
concluded that, the excretory urography better defines renal parenchymal changes, but internal composition of a non-opacified kidney or renal masses remain undefined. So, nephrosonographical images have considerable values in evaluation of most functioning and non-opacifying kidneys. Moreover, contrast cystography is useful in identifying luminal or bladder wall diseases but is more invasive than bladder sonography.