You can fill be hide a horses ears and if its warm then there whole body is warm if its cold there whole body is cold.
You would put a blanket on a horse in the winter to save him from getting a cold or even dieing. However, if you do not clip your horse, it is better to leave him unblanketed. To tell if your horse is cold enough to blanket him, touch his ears. If the are cold, he is most likely cold. If they are not, he is fine as is. Also look for abnormal behavior. If he is standing listlessly with his head down, something is wrong, and it may be that he is cold.
You can tell how old a horse is by the grove on its last incisor's.
no
It is bad for horses to wear blankets as you can read in the related link. The only time you would need to blanket a horse is if you rob them of their protection from the cold by clipping them. In this case the blanket is the lesser of 2 evils, even though it is still really bad. To tell if the horse needs a blanket, touch his ears. If they are cold, he is most likely cold. If not, he probably isn't, so leave him unblanketed.
The type of cold medicine that a horse may receive would be totally up to the equine veterinarian that is overseeing the horse. Human grade cold medicines are not equine safe and should not be given,
they are cold-blooded
A horse can live in both climates.
If you mean 'how can you tell how old a horse is' The answer is, you can tell by their teeth. If you want to tell old a horse is, find a book about horses that gives you pictures of the different stages of their teeth. Match the horse's teeth up to what the picture says and you will know approximately how old that horse is.
from what i can tell, an unproportional horse or a horse that is badly trained. its usually not their fault.
No
All horses are warm blooded.
Tell you to go tell them.