Spanish Name: " El mono del aullador."

Size:
Both sex have nearly 4 feet including tail.
Male: 16-20 lb. 
Female: 12-18 lb. 

Life span: 
Average of 15\-20 years.
For more information:

• report by Maite G
• Revised by Sebastian.A
  

Predators: 

• Large birds of prey

• Enemies eat the babies, such as the red uakari, other groups 

Adaptations: 
Their habitat is arboreal, in the Tropical forests. It usually lives in groups of 30 monkeys, of both sex and all ages.At night they emits its howl which can be heardn up to two miles away.They have a loud howl because they have lived with many enemies so they use their loud howl to give warnings to their friends if some one is near them, also to other species which invaded their territory. 
They also have very long nails so they can hang around the trees easily. 

Interesting Facts: 

•  Haves shaggy hair. 

•  Its the biggest monkey in South America. 

•  Named for their large howls, which is cause by  hyoid. 

•  They have a very strong competition between     groups. 

•  Second loudest animal on earth.

•  They are six species of the Howler monkey
  

About the Howling:
 Only the males can howl and their howls can reach  up to 5km.
 The bone which makes them howl is called the  hoiyd bone.
 

 Bibliography:  (In MLA format)
 " Biosphere-expedition. 26  Mar. 2003" <www.biosphere-expeditions.org/  expeditions/peru.htm> 
<http://www.phoenixzoo.org/events/howlermom.jpg>

 Internacional Wild Life encyclopedia. North  Bellmore: Marshell Cavendish Corporation, 1994. 

 "Zoo Region" 26 Mar. 2003    <http://www.zooregon.org/Cards/Amazon/black.howler.monkey.htm>

  "America zoo"
<www.americazoo.com/goto/index/mammals/95.htm>

"Singapore Zoological Gardens"
<www.zoo.com.sg/openzoo/ animal/c-prim.htm>