Yes. Though no viable sperm can be produced, the stallion or colt or even "stud gelding" will still act like a stud around the mares.
a rig is a gelding that thinks he is a stallion, normally this is because the gelding is cut later than normal, a rig will often try to mount mares and sometimes will be very vicious towards other male horses.
Horses produce manure, urine, and sweat. They also produce sounds such as neighing and snorting. Additionally, horses produce milk for their foals.
It may be considered a therapeutic medicine in some situations.
One who kills and renders horses for food, glue etc Also a slang term (UK) for a testicle
No.
I'm not sure about produce, but if you meant reproduce, they do it in the exact same way as domestic horses.
Yes, horses are heterotropic, they cannot produce their own food.
no
Two Mustangs produce a Mustang
Yes. All pets have dander.
Horses, flax, linen, and slaves-
For stallions, it's primarily testosterone. For mares, it's primarily progesterone and estrogen, as well as oxytocin (for milk let down).