Rarely do I hear people say Guatemala is on their bucket list ... such as tarantulas, howler monkeys, and jaguars. But with the right guidance, exploring this iconic Mayan Ruin is an incredible ...

The team studied many species, including black and gold howler monkeys, tufted capuchins, black-capped squirrel monkeys, and Peruvian spider monkeys. They took CT scans of excised monkey larynxes ...

Primates studied included the black and gold howler monkey, tufted capuchin, black-capped squirrel monkey, and Peruvian spider monkey. Monkeys, scientists found, had a secret yodelling weapon ...

Primates studied included the black and gold howler monkey, tufted capuchin, black-capped squirrel monkey, and Peruvian spider monkey. Monkeys, scientists found, had a secret yodelling weapon ...

Researchers recorded and studied the calls of various primate species, including the black and gold howler monkey (Alouatta caraya), tufted capuchin (Sapajus apella), black-capped squirrel monkey ...

This allowed them to see what was going on in the larynx of black and gold howler monkeys, tufted capuchins, black-capped squirrel monkeys and Peruvian spider monkeys. The spider monkey was the ...

These included the black and gold howler monkey, black-capped squirrel monkey and Peruvian spider monkey. New World monkeys, whose range stretches from Mexico to Argentina, were found to have ...

Things only get weirder and worse from there. The Monkey, for all of the familiar trappings, isn’t just another horror-tinged distraction. As the kills become gnarlier — and more, how do I put ...

Trichromatic vision (seeing red, green and blue) evolved in Old World monkeys and apes through gene duplication. Howler monkeys independently developed this trait. Nocturnal primates, like ...