Abstract
The morphology of the organs of the male and female reproductive system and their histological parameters in small animals at different age levels were studied. Males and females of small animals of the following ages were selected for the experiment: 6 months, 12 months, 2 years and 4 years. The biological material of the testis and ovaries was taken from the animals for the manufacture of histological preparations. The preparations were stained with hematoxylin - eosin for morphometric analysis of organs.