Pigs can breathe through their butts Pigs can breathe through their butts. So can mice and rats! Scientists discovered this by researching alternative methods for ventilators traditionally used to pump oxygen to the lungs. Turns out, oxygen gas via the anus into the intestines worked in reoxygenating blood. Source Ventilating the rectum to support respiration …
Spontaneous sex changes can happen in chickens with female hens developing the characteristics of male roosters. Chickens can undergo this natural sex change when their only functional ovary becomes damaged or diseased. In these cases, their other dormant gonad may begin producing male hormones, which trigger male behaviors and features. The hen may develop male …