Finger monkeys, or pygmy marmosets, are all the rage now. People who like to have exotic pets want to adopt these little critters and keep them under their care, and this has caused a sudden explosion ...

Pygmy Marmosets, as they're officially called, hail from South American rainforests, and they really are as teeny tiny as they look, measuring less than 6 inches and weighing less than 5 ounces .

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, ...

Venezuelan Red Howler (Alouatta seniculus). They inhabit rainforests and mountain forests of Central and South America. The loudest monkey. Morning roar of a red howler. Close-up.© ...