Howler Monkeys: Behavior and Habitat

Howler monkeys, found from southern Mexico to northern Argentina, are known for their loud calls, which are among the loudest in the animal kingdom. This is due to their unique anatomy, including a hyoid bone and throat pouches that amplify sound. Only male howler monkeys howl, likely to mark territory and communicate location. They live in tree canopies, eating leaves, flowers, buds, and fruits, and use their prehensile tails for grasping. Weighing up to 15 pounds, they sleep up to 15 hours a day, which is beneficial for their jungle neighbors.

Where do howler monkeys primarily reside?

• In the tundras of Antarctica

• From southern Mexico to northern Argentina

• In the forests of Europe

• In the deserts of Africa

What makes howler monkeys' calls so loud?

• Their hyoid bone and throat pouches

• Their large lungs

• Their sharp teeth

• Their long tails

Why do male howler monkeys howl?

• To attract mates

• To mark territory and communicate presence

• To scare predators

• To mimic other animals

What do howler monkeys primarily eat?

• Grains and seeds

• Fish and aquatic plants

• Leaves, flowers, buds, and fruits

• Insects and small animals

How do howler monkeys use their tails?

• To store food

• As a fifth hand to help identify things

• To balance while running

• As a weapon against predators

How much can howler monkeys weigh?

• Up to 10 pounds

• Up to 20 pounds

• Up to 5 pounds

• Up to 15 pounds

How long do howler monkeys typically sleep each day?

• Up to 20 hours

• Up to 15 hours

• Up to 10 hours

• Up to 5 hours