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Southern Black Howler Monkey

Alouatta caraya

Geographic Region: eastern Bolivia, southern Brazil and Paraguay, and northern Argentina

 Isn’t it Wild? Howlers’ calls can be heard 1.8 miles away in the forest, and 3 miles away over water. This loud volume is a result of the monkey’s deep jaw, and enlarged larynx and hyoid apparatus (a resonating chamber).

 There’s More to the Story Southern black howler monkeys have a strong prehensile tail that enables them to grip and hang from branches — like an extra hand when in motion. The tail has a sensitive, hairless patch at the end on the underside, enabling them to identify texture.



Height: 20 – 26 in.

Weight: Male: 25lbs; Female: 12 lbs.

Zoo Diet

leaf eater and primate browse biscuits, banana, grapes, lettuce, romaine, escarole, spinach, apples, blueberries, cantaloupe, honeydew, pears, oranges

Conservation Status

Least Concern

Faces of the Rainforest

Exhibit information

Journey to the Amazon rainforest! Get a glimpse of the rare South American giant river otter. Giant is right! A full-grown otter can reach lengths of up to six feet long!

Wait until you meet the Titi monkeys who mate for life. They can typically be seen sitting or sleeping in pairs with their tails intertwined.

Do you hear that sound? That’s a howler monkey’s call, often heard at a distance of up to two or three miles away!

These animals are just some of the fascinating creatures you’ll discover in the Zoo’s awe-inspiring Faces of the Rainforest exhibit. They’ve joined some of your old favorites like the giant anteater, Chilean flamingos, and white-faced saki monkeys. Whether you’re interacting with toucans and troupials (troupials are a large passerine bird species found in Central America and tropical South America) inside the exhibit’s free-flight aviary or viewing a massive anaconda and stunning tropical fish, this immersive wildlife experience will take you on a journey to the depths of the Amazon Rainforest. Visitors will discover how these diverse species—big and small—create the complex ecosystem on which rainforests thrive, and what we can all do to ensure their survival.

Did you know that 80% of rainforest deforestation is caused by agriculture? Natural habitat is being destroyed to clear land for ranches and plantations. But simply by choosing to purchase sustainably grown products, you can make a difference.

One way to help protect the rainforest is to “Follow the Frog”! Just look for the Rainforest Alliance seal on products ranging from bananas and chocolate to coffee and flowers. Click HERE for a list of Rainforest Alliance certified products

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