[6] The geographic distribution of M. browni is limited to Quintana Roo in southwestern Mexico, and western Guatemala, including Sacatepequez.

[2] Although little is known about the behavior of M. browni, like most other coral snakes it may be nocturnal, terrestrial and probably dwells in burrows, leaf litter, or under logs.

[citation needed] M. browni feeds on small lizards, amphibians, invertebrates, and other snakes.

[2] Like other members of the genus Micrurus, M. browni is oviparous and may lay a maximum of 15 eggs per clutch.

[6] The subspecific name, taylori, is in honor of American herpetologist Edward Harrison Taylor.