About Rhinella dorbignyi (Duméril & Bibron, 1841)
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. The head of Rhinella dorbignyi is rounded and high, and it has a continuous, very high, thick supraorbital crest. The dorsum is covered in keratinized tubercles of variable sizes, which may be either conical or rounded. Rhinella dorbignyi occurs in northeastern Argentina, Uruguay, and southeastern Brazil. Its natural habitats are open areas including pastures and Pampas grassland, and it is able to persist even in areas with heavy agricultural activity. It is a common species that is not threatened. Rhinella dorbignyi are sit-and-wait predators. 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 occurs during spring and summer, from October to March, taking place in temporary and permanent waterbodies after heavy rains.
