[4] Though sometimes thought to have been introduced, a Late Pleistocene fossil bufonid has been identified from Miyako-jima.

[4][10] The Miyako toad's diet largely comprises small invertebrates such as ants, beetles, snails, and worms.

[4] Its mating call includes five distinct notes, lasting in total some 1.5 seconds.

[4] Females lay some twelve to fourteen thousand eggs, some 1.7–2.0 millimetres (0.067–0.079 in) in diameter.

[4][9] The Miyako toad is classed as Near Threatened on the Ministry of the Environment Red List.