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What is the Mysterious Esturro?

Juliana Coin | 04/06/2026
Pantanal

Did you know that jaguars don’t roar in the same way as other large felines, such as the lion or the tiger?

The jaguar, an icon of the Brazilian wilderness, produces the esturro: a vibrant, deep sound that strikes awe into even the most courageous pantaneiros.

In this article, you will discover the secrets behind the vocal signature of South America’s largest feline. Understand why a journey to the Pantanal isn’t merely a visual expedition, but a profound sensory experience for every adventurer.

Discovering the Esturro

A low and powerful melody erupts from within the trees. The esturro is no ordinary roar; it is generated by a specialized larynx, as jaguars possess a unique structure in their vocal tract.

A jaguar’s vocalization can reach up to 1.2 miles (2 km) and serves a strategic survival function. Within the Pantanal ecosystem, the esturro is used to delineate territories and prevent fatal confrontations between neighbors.

Furthermore, it is common to hear the esturro during the jaguars breeding season, when the sound becomes an invitation for males and females to find one another and pair up amidst the wild.

Pantanal
Ricardo Casarin/South Quest

The Breeding Season

If you are planning your journey to the Pantanal, take note of the dates when jaguars intensify their vocalizations. Between August and December, during the reproductive period, the nights transform into true sonic landscapes.

Regardless of your chosen date, the Pantanal will surprise you. With South Quest, you are accompanied by expert guides who will assist you in tracking jaguar signs, ensuring that every encounter is as fascinating as nature itself.

Whether in the flood or dry season, the colors, sounds, and life of the Pantanal will leave a lasting impression upon you.

Pantanal
João Marcos Rosa/South Quest

Your Next Expedition to the Pantanal

South Quest creates profound connections between the traveler and the natural world. We work alongside leading conservation partners, guided by the belief that true luxury lies in silence and respect for the habitat. Contact us to learn more about the Pantanal and begin your journey.

Sources: G1, Revista Amazonia, and BBC News Brasil.