Social systems of "M. berthae" are more similar to the gray mouse lemur ("Microcebus murinus") than the fat-tailed dwarf lemur ("Cheirogaleus medius"), i.e. Madame Berthe's mouse lemur is sexually promiscuous rather than monogamous. The range in distance of males is larger than that of the females in both Microcebus species, both before and after mating seasons. Research has also been conducted on the distribution of sleeping sites, as well as on testes size and the presence of vaginal plugs. Study of capture rates and physiological proof reveals no evidence that "M. berthae" has a hibernation season, which increases the chances of sexual activity within the species.