Rhinella dorbignyi (Duméril & Bibron, 1841)

Sexual Size Dimorphism

This species, Rhinella dorbignyi, displays a clear difference in snout–vent length between sexes: males measure 36–64 mm (1.4–2.5 in), while females measure 42–69 mm (1.7–2.7 in). One specimen with a 77 mm (3.0 in) SVL has also been reported.

Head Morphology

The head of Rhinella dorbignyi is rounded and high, and it has a continuous, very high, thick supraorbital crest.

Dorsal Skin Characteristics

The dorsum is covered in keratinized tubercles of variable sizes, which may be either conical or rounded.

Geographical Distribution

Rhinella dorbignyi occurs in northeastern Argentina, Uruguay, and southeastern Brazil.

Habitat Preferences

Its natural habitats are open areas including pastures and Pampas grassland, and it is able to persist even in areas with heavy agricultural activity.

Conservation Status

It is a common species that is not threatened.

Feeding Strategy

Rhinella dorbignyi are sit-and-wait predators.

Microhabitat and Behavior

Individuals are typically found inside small holes or under stones, with their head positioned at the entrance, and will retreat when they are disturbed.

Breeding Period and Habitat

Breeding occurs during spring and summer, from October to March, taking place in temporary and permanent waterbodies after heavy rains.