EDIT: Oh dear, an F- for reading comprehension for me - my eyes glazed over on bullet point number two, which as you all pointed out, is rather dumb. Sorry!
I just read
a nice little article on blanketing, since it's blanket season for those of us in the Northern Hemisphere (grumble). The highlights:
-Horses that are clipped or kept in barns under light to discourage winter coat production should be blanketed when temperatures drop below 60*F or when it is windy or rainy.
-Horses with a moderate hair coat can tolerate temperatures as low as 40*F. If they have a heavy coat, they can tolerate temperatures down to about 30* F. Wet conditions change these temperature limits, so keep that in mind when blanketing!
-A horse that has recently moved from a warmer climate might benefit from some external help. Once they've spent the 10-21 days being exposed to the colder weather, they will adapt and need less help, but you might find it beneficial to blanket them until the next winter.
-Older horses that move around less benefit from blanketing in colder weather. Moving generates body heat which is why we often see horses' levels of exuberance rise with cold weather!
-Remove the blanket on a regular basis--check to make sure your horse is not losing body condition, doesn't have blanket rubs or injuries, and is not developing a skin problem such as rain rot under the blanket.
-When the weather is rainy, check to make sure the blanket is waterproof--you will be fighting a losing battle trying to keep a wet horse warm with a wet blanket! Place your hand under the blanket around the neck--your horse should feel dry and toasty warm.