DID YOU KNOW?
Brown Howlers have an extended hyoid or voice box that expands to almost three times the size when he howls.

HABITAT
Primary and Secondary forest. They are found in the coastal forest of Eastern Brazil.

SOCIAL STRUCTURE
Variable, 1 male – multifemale, 2 male – multifemale or multimale groups.

In the multimale groups the bachelors go out and try to dominate a male for his females. Group sizes range from 6 individuals to 11.

BEHAVIOR
Diurnal and arboreal.

The brown howler decends from trees to drink from streams. The entire group will engage in grooming although the females groom the most. This species will never recline while eating. If they are not sitting upright then they are hanging from the branches suspended by at least three limbs. Mothers do not look after their own babies but hand that resposiblilty to another female in the group.

ASSOCIATION
They are sympatric with Woolly Spider Monkeys.

MATING
Brown howlers engage in tongue flicking as display of sexual intentions.

TERRITORIAL MARKING
Brown Howlers mark their territory vocally in the late afternoon.

SCENT MARKING
This species does not obviously scent mark.

VOCALIZATIONS
The Brown Howler is the loudest land mammal and can be heard for up to 7 km. He does this to mark his territory and does very little other volcalising.

THREATS TO THE SPECIES
Howlers are hunted for their meat, fur and voice box. The voice box is used as water carriers and hand bags. It is believed that if you drink the blood that runs through the voice box you will have a beautiful singing voice and will experience painless births.