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.
The sun's rays reach the ground in Seattle during 43 percent of daylight hours on average year round, for a total of 1922 hours annually. Typically on 71 days a year the sky is mainly clear, with at most 30 percent cloud cover. Sunlight in Seattle averages 12 hours and 14 minutes a day. The shortest days of the year in mid December have 8 hours and 25 minutes of daylight. The year's longest days in mid June last 15:59 from sunrise to sunset.