The hay should not stink at all. If the hay is out in the open it can begin to smell funny from mold and debris getting into it. If the hay is covered of inside it should always smell clean and crisp, it it quickly picks up an odor, either the hay has something wrong with it or something is soiling it. You should investigate the hay thoroughly before purchasing it and if after you've bought it the hay begins to smell you should have an analysis done to determine what is wrong with it. Hay can also take on the smell of the air, if you feed hay in a dirty stall it will begin to smell like the stall, or pick up nearby odors.
3 times
There is no specific number of times. When near water, a horse will drink whenever it is thirsty.
When it's a hot day and the horse is dirty or sweating
On average, a horse's heart beats about 40 times a minute.
4 times a year.
About 445 times
A canter on a horse is done three times. " One, Two, Three." "One, Two, Three."
54
The speaker spots the horse twice in the poem "The Horses."
25 days
About 3 days
around 10 times per day