Sheaths also swell as a result of being dirty.. Horses with large beans (accumulations of secretions at the end of the penis) and large accumulations of sheath smegma (normal pasty secretion) often swell. Horses that urinate into their sheaths tend to have dirtier sheaths and more problems with swelling.
Some people think Alaska has less sunlight than other places. The opposite is true. Averaged over an entire year, Alaska gets 10-17 minutes more daylight per day than the rest of the country. If you include civil twilight, Alaska gets 40 minutes more light on average than the rest of the country.
In the Southern Hemisphere, this is the day with the greatest number of daylight hours and the beginning of summer. The North Pole has 24 hours of darkness on December 21 or 22, whereas the South Pole has 24 hours of daylight. Throughout the winter season, the length of daylight gradually begins to increase.