Where do *Brachycephalus brunneus* live?

*Brachycephalus brunneus* are found in the mountainous regions of the Atlantic Forest in southeastern Brazil, at elevations between 800 and 1,200 meters. They prefer humid environments and live hidden under forest litter, fallen logs, and rocks, becoming active at night to forage for insects, spiders, and earthworms.

Are *Brachycephalus brunneus* poisonous?

Yes, *Brachycephalus brunneus*, like other members of the genus *Brachycephalus*, secrete toxins from their skin. Their poison is tetrodotoxin, a potent neurotoxin also found in pufferfish, and is deadly even in small doses. This toxin is thought to be their primary defense mechanism.

Are *Brachycephalus brunneus* endangered?

*Brachycephalus brunneus* are facing a decline in population due to habitat loss, deforestation, and pesticide use, putting them at risk of extinction. They are listed as Vulnerable (VU) on the IUCN Red List, highlighting the need for conservation efforts.

Animal Article

Brachycephalus brunneus

Hidden in the Atlantic Forest of southeastern Brazil, *Brachycephalus brunneus*, a small frog with a brown hue, is a more subdued species in the genus. However, like its brightly colored relatives, its ecology is shrouded in mystery. Let's embark on a journey to explore the intriguing world of *Brachycephalus brunneus*!