In my study, I explored the differences in ecological niches and bioclimatic preferences of the Greater and Lesser Capybara. Wallace was used in obtaining the locality and bioclimatic data required to generate ecological niche models and determine if any significant differences existed between the species. The lack of information regarding the lesser capybara, indicated by the data deficient designation on IUCN, emphasizes the need to study the differences between both species rather than assuming they are the same. With the literature indicating that the lesser capybara is a subspecies with little ecological differences, I hypothesized that there would not be any significant differences in the bioclimatic variables predicting their ecological niche. However, I discovered that there was a significant difference in the minimum temperature of the coldest month and temperature seasonality between the two species.