The "big truck, small man" phenomenon is also seen in the animal kingdom. The loudest howler monkeys were found to have the smallest packages. Hyoid bone size, which is responsible for vocalizations, ...
Add Yahoo as a preferred source to see more of our stories on Google. Venezuelan Red Howler (Alouatta seniculus). They inhabit rainforests and mountain forests of Central and South America. The ...
Eleanor has an undergraduate degree in zoology from the University of Reading and a master’s in wildlife documentary production from the University of Salford. Eleanor has an undergraduate degree in ...
Small enough to sit comfortably in a human hand, the pygmy marmoset is the world’s smallest monkey, weighing around 100g. But do not let its diminutive dimensions fool you. Look beyond the cute ...
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Monkeys with smaller testicles scream louder to compensate

It’s a long-held belief that loud mouths overcompensate for something, but in the case of howler monkeys, science has confirmed it’s a biological fact. A landmark study by Dr. Jacob Dunn at Cambridge ...