This popped up in my Facebook news feed and I find it a interesting. Apparently hens are able to reject the semen of roosters who are not worthy to them.
http://news.discovery.com/animals/hens-eject-sperm-110907.html#mkcpgn=fbdsc9
(if any else posted this first I apologize)
http://news.discovery.com/animals/hens-eject-sperm-110907.html#mkcpgn=fbdsc9
(if any else posted this first I apologize)