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.
We did a study over 10 years ago based on these three stations and found that for Denver if you count every day when the sun came out for at least one hour, that then you could come up with an average of around 300 days of sunshine each year.- In the Denver area there are probably only 30-40 totally overcast days per year, and some of them are even fairly bright -- about 300 days would have at least one hour of sunshine sometime during the day, but only about 115 days per year fit the classic definition of clear. -- Answered by Nolan Doesken (9/03).