The objective of the study is to study the population density of the white bellied rat Rattus rattus frugivorus at the Experimental
Station of the Faculty of Agriculture, Sohag University in El-Kawther city, Sohag Governorate, Egypt for 2014-2016 years. The results
were showed that the population density of white bellied rat, R.r. frugivorus increases in summer and decreases in winter. It is clear
that the sexual ratio decreases in winter, where males are more than females and are active in spring and summer. It was also found
that adult males are increasing in the spring and summer seasons, while in females they increase in winter.
Keywords: Experimental Station; dominant species; rodent management programs; white bellied rat