Ten kidneys were investigated by corrosion cast in this study. The renal arteries divided into the dorsal and ventral branches. The dorsal and ventral branches gave off the interlobar, arcuate and interlobular arteries, respectively. No anastomoses were seen between the renal arteries and their branches. A third branch originated from the junction of the dorsal and ventral branches in one right kidney. A dorsal branch gave off an interlobar artery supplying the ventral surface of one left kidney. An interlobar artery did not arise from the ventral branch at this part.