A group of Howler Monkeys investigating the sanctuary canopy! What gentle yet powerful beauty they possess. These monkeys move in the trees with the most subtle care of any of the primates in Central America due to their need to conserve energy. This is a result of their vegetarian, low-calorie diet of Rainforest leaves. They get their name from the massive deep-throated howl they produce, which can be heard up to 3 miles away! They make these noises to warm other Howler groups of their location to avoid competing for food- also an energy saving technique... We can learn a lot from their methods!