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 complex baculum and monogamous sexual relationships. In their paper published in Proceedings of the Royal Society B, Charlotte Brassey, Julia Behnsen and James Gardiner describe performing 3-D X-ray imaging on 82 baculum specimens from multiple species and what they found when they analyzed the images.
Click here for original story, Baculum study suggests its complexity is related to monogamous behavior
Source: Phys.org