“The ‘vaginal friction’ hypothesis,” Brassey explains to Inverse, referring to one theory for the function of the baculum, “is based on the idea that the rigid baculum bone might help stiffen the ...

Compared to the rest of animals on Earth, human beings are weird when it comes to sex. Walruses, chimps, and many other mammals have a sexual tool that human men lack: a penis bone. Scientists know ...

A trio of researchers from Manchester Metropolitan University, the University of Manchester and the University of Liverpool, respectively, has found an association between mammals with more highly ...

A new study suggests that monogamy and how long humans have sex may be the reason why men don’t have bones in their penises, while other male mammals like bears, chimps and gorillas do. The study, ...

A new UCL study examines how the baculum (penis bone) evolved in mammals and explores its possible function in primates and carnivores—groups where many species have a baculum, but some do not. The ...

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. One of the most weird and wonderful products of evolution is the penis bone, ...

Most people are aware that human males do not have calcified bones in their penis. If this seems obvious, did you know that most other species of mammal have a bone in their penis? Well they do, and ...

Even though many mammals, including our closest primate relatives, exhibit the presence of penis bones, humans seem to be the exception. Recently, scientists have announced that they have discovered ...