So far, we’ve only seen the white faced monkeys (pictured here), but every night at dusk we hear the howler monkeys. They are small, only about 15 lbs. each and they sleep most of the day. When they wake up, they do a territorial growl that is quite intimidating, especially in a group. They have sort of a natural amplifier in their throats, and a saggy mouth shape that makes their sound acoustically LOUD. Check it out, it’s weird…

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