In a translocation experiment in 1971., 5 pairs of Italian wall lizard Podarcis siculus were moved from the native island Pod Kopište to the island Pod Mrčaru. After 36 years, it was discovered that Podarcis siculus competitively excluded the autochthonous Dalmatian wall lizard Podarcis melisellensis. Differences in morphology, physiognomy and anatomy were found between the populations of Podarcis siculus on the mentioned islands. Further research compares behavioral differences between populations, which is the subject of this paper examining behavioral characteristic of sociability. Previous research has established higher sociability of the population from the more densely populated island Pod Mrčaru. The aim of this study was to determine the sociability of two groups Podarcis siculus lizards which were bred in captivity, those that came into social contact with individuals of the same species and those that did not. The research was proven by a 3-chambered sociability test and an open field maze. Initially, 70 individuals that lived solitary were tested, and then they were randomly arranged into two groups. Over the next month, 40 individuals lived in solitary conditions and 30 individuals in social conditions (with individuals of the same species, but opposite sex) and testing was repeated. The results of this study indicate the absence of statistically significant differences in sociability between the group of lizards Podarcis siculus, those who came into social contact, and those who did not. That is, social contact does not affect the increase in the sociability of the lizard Podarcis siculus. This scientific research is part of a project “HRZZ Generaliz“, which goal is to determine the causes of phenotypic differences between the two populations of Podarcis siculus.