[ntype]

http://www.livescience.com/animals/07121...-call.html

Female monkeys may shout during sex to help their male partners climax, research now reveals.
Without these yells, male Barbary macaques (Macaca sylvanus) almost never ejaculated, scientists found.
Female monkeys often utter loud, distinctive calls before, during or after sex. Their exact function, if any, has remained heavily debated.

[Sunny]

http://www.livescience.com/animals/07121...-call.html

Female monkeys may shout during sex to help their male partners climax, research now reveals.
Without these yells, male Barbary macaques (Macaca sylvanus) almost never ejaculated, scientists found.
Female monkeys often utter loud, distinctive calls before, during or after sex. Their exact function, if any, has remained heavily debated.

Even monkey's need dirty talk in bed. You guys should point this out to your wives next time they are just laying there yawning while you mount them.