The Munduruku language is part of the Tupi language family.

According to Gomes (2006), "widely known by Mundurukú, the historically famous 'head cutters' call themselves wuyjuyu 'people.'
Considered in the past 'one of the most warlike, powerful and intelligent tribes of Brazil (...)' (Hartt, 1884), this Brazilian indigenous community seeks today to 'cut off the head 'of enemies through dialogue, not only territorial disputes are part of this 'war', but also disputes over health, linguistic, social and cultural education and self-preservation."

They are also notable for their linguistic separation of "us" (their tribe) from "them" (everyone else), the pariwat.
Whereas they refer to themselves as the wuujuyû, or "our people", everyone else is spoken of as the equivalent of "prey".

Unlike the Pirahã, the Mundurucu have a numeracy system, albeit limited (similar to that found in some Aboriginal Australian cultures).
Pierre Pica was instrumental (in a work done in collaboration with Stanislas Dehaene and Elizabeth Spelke)   in revealing the psychophysics and linguistic properties of the Munduruku counting system to the Western world.
The Mundurucu have number words up to only five, although each word is not as definite in meaning as number words in English, and the lexical limitation is no obstacle to their making calculations involving larger numbers.
Furthermore, the Mundurucu use logarithmic mapping of numbers to assess scales, a point cited as possible evidence for the notion that this kind of numbering is innate, whereas the linear mode has to be acquired by study.
The Munduruku language is part of the Tupi language family.
According to Gomes (2006), "widely known by Mundurukú, the historically famous 'head cutters' call themselves wuyjuyu 'people.' Considered in the past 'one of the most warlike, powerful and intelligent tribes of Brazil (...)' (Hartt, 1884), this Brazilian indigenous community seeks today to 'cut off the head 'of enemies through dialogue, not only territorial disputes are part of this 'war', but also disputes over health, linguistic, social and cultural education and self-preservation."
They are also notable for their linguistic separation of "us" (their tribe) from "them" (everyone else), the pariwat. Whereas they refer to themselves as the wuujuyû, or "our people", everyone else is spoken of as the equivalent of "prey".
Unlike the Pirahã, the Mundurucu have a numeracy system, albeit limited (similar to that found in some Aboriginal Australian cultures). Pierre Pica was instrumental (in a work done in collaboration with Stanislas Dehaene and Elizabeth Spelke)   in revealing the psychophysics and linguistic properties of the Munduruku counting system to the Western world. The Mundurucu have number words up to only five, although each word is not as definite in meaning as number words in English, and the lexical limitation is no obstacle to their making calculations involving larger numbers. Furthermore, the Mundurucu use logarithmic mapping of numbers to assess scales, a point cited as possible evidence for the notion that this kind of numbering is innate, whereas the linear mode has to be acquired by study.
Munduruku