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Two of the sixteen consonants, /ʙ̥, h/ occur infrequently. /ʙ̥/ only occurs in expressive words, or before the vowel /u/. /h/ only occurs after a coronal consonant, like /a/ or /u/. There is also a specially rare occurrence of two implosive consonants, /ɓ/ and /ɗ/.
The language is spoken by a people which includes groups that are still uncontacted. They live mainly in three villages: Cachoeira Seca, Laranjal and Maia. However, the natives of the latter have switched to Portuguese, while 85 speakers still remain in Cachoeira Seca and 250 in Laranjal.
Animal talk
Linguist Isaac Costa de Souza studied the language and concluded some words were modified when used to talk to different animals. The table below shows some modified words used when speaking to a capuchin monkey.
Normal word
Capuchin word
English gloss
ɔɛt
ɔɛgɛt
rubber tree
aɛ
aɛge
wasp
ikpa
ikpaga
mud
kuɾi
kuligi
bead
kɔk
kɔgɔk
night, evening
nu
nugu
tumour, abscess
paɾu
palugu
water
Different modifications are used according to the species of animal being addressed. The word ikpa, for example, might be modified as tɔkpa when addressing a dog, or as ĩkpã when addressing a howler monkey. Specific modifications may be used when talking to woodpeckers, tortoises, and coatis, among other animals.
References
Arára at Ethnologue (18th ed., 2015) (subscription required)
Lev, Michael; Stark, Tammy; Chang, Will (2012). "Phonological inventory of Arára, Pará". The South American Phonological Inventory Database (version 1.1.3 ed.). Berkeley: University of California: Survey of California and Other Indian Languages Digital Resource.