Red vs Black Howler Monkey - Who Screams Louder?

In this video, we dive deep into the wild world of howler monkeys, comparing the Red Howler Monkey (Alouatta seniculus) and the Black Howler Monkey (Alouatta caraya) - two of the loudest primates on Earth. Have you ever wondered which howler monkey rules the jungle with its voice?

These incredible creatures are famous for their spine-chilling vocalizations that can travel for up to 5 kilometers through the dense rainforest. But while both are known for their powerful calls, they sound surprisingly different.

🔴 Red howlers produce long, booming, low-pitched roars that echo like thunder - calm but commanding.
⚫ Black howlers, on the other hand, have shorter, raspier bellows - rougher, almost growling in tone.

In this video:
We break down the vocal behavior of each species
Show real audio comparisons
And ask: which one sounds more fearsome to you?

🎧 Stick around until the end to hear real recordings of both species and decide for yourself: Who screams louder?

Clips Used:
Science News:    • Hear a male howler monkey roar  
Eden Federolf:    • Bugio-preto (Alouatta caraya) vocalizando  

The film uses stock photographs and footage.
Other sources provided in the video.

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