The female rat's colonic obstruction was a consequence of the pressure induced by a distended vagina packed with caseous copulatory-like plugs of spermatozoa. We believe the rat died of multiple ...

It focuses upon the role that copulatory and post-copulatory sexual selection have played during the evolution of the monotremes, marsupials and placental mammals, and examines the effects of sperm ...

It is called a “copulatory tie” and is also seen in wild canines such as wolves and foxes. It happens because a section of ...