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It is a terrestrial toad that is endemic to northern Argentina, southeastern Bolivia and western Paraguay.
Its body is as long as it is wide, with a large mouth and protuberances on the upper part of its eyes, which is why it is known as the horned or ‘horny’ toad. They are sexually dimorphic, with males being smaller than females and their colouring more intense.
They like to remain hidden or camouflaged in the soil and leaf litter, going unnoticed by their prey. They are very voracious and nocturnal animals.
They reproduce when the first rains come and the eggs are deposited in groups in the water. The tadpoles are cannibalistic immediately after hatching and transform within three weeks.
Their main threats come from the pet trade and from being killed due to the mistaken belief that they are poisonous.