Fire-bellied toad
A small toad in the genus Bombina, named for its vivid red, orange, or yellow underside. Its belly coloration warns predators of skin toxins.
Bombina: A genus of small, aquatic toads native to Europe and Asia, characterized by brightly colored undersides. Fire-bellied toads belong to this genus, whose members share the belly-warning display.
Unkenreflex: A defensive posture in which a threatened amphibian arches its body to expose brightly colored ventral surfaces. Fire-bellied toads reveal their warning-colored undersides by curling into this posture.
European fire-bellied toad: Bombina bombina, a European species with a red or orange belly marked by dark spots. It is a well-known European member of the genus bearing the characteristic belly pattern.
Yellow-bellied toad: A Bombina toad, usually Bombina variegata, with a yellow-and-black ventral pattern. Its yellow belly contrasts with the redder underside associated with many fire-bellied toads.
Anura: The amphibian order containing frogs and toads, defined by adults that lack tails. Bombina is a toad lineage within this broader amphibian order.
Amphibian defensive behavior: Behaviors amphibians use to deter, evade, or withstand predators. The unkenreflex is one element of the toad’s broader repertoire of predator defenses.
Oriental fire-bellied toad: Bombina orientalis, an East Asian species with a bright red or orange underside. This East Asian species is frequently kept in captivity and displays the genus’s vivid ventral coloration.
Bombina bombina: A European Bombina species whose red or orange underside is patterned with dark spots. This species exemplifies the fire-bellied name and its conspicuous ventral markings.
Aposematism: Warning coloration or signaling that advertises a defensive trait to potential predators. The bright underside advertises the toad’s distasteful skin secretions.
Skin toxin: A biologically active chemical produced or stored in skin that can deter or harm predators. Bombina skin secretions contribute to the distasteful quality signaled by the bright belly.