[1] Accounts and descriptions of this species are frequently confounded with those of Microcebus berthae, the smallest primate in the world.

Most articles on the web report information on M. myoxinus that correspond to studies made in Kirindy Forest on M. berthae.

This indicates that the testes of male pygmy mouse lemurs would grow a significant amount during the mating season.

[8] During the dry season, pygmy mouse lemurs enter a state of inactivity to save energy.

Compared to males, female pygmy mouse lemurs are more likely to enter this type of hibernation which results in the sex ratio being skewed to one side.