Origins of masturbation traced back to primates 40m years ago - The Guardian
- Origins of masturbation traced back to primates 40m years ago The Guardian
- Study explains the evolutionary origins and advantages of masturbation Phys.org
- Masturbation is 10 million years old – our ape ancestors were at it all the time Daily Star
- When and why did masturbation evolve in primates? A new study provides clues Science News Magazine
- Super semen could be one reason why primates evolved to masturbate Popular Science
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