It makes stressing noises and would behave strangely
If a horse has hock pain you should call an Equine Veterinarian and have them do a full work up on the horse to find why the hocks are sore.
You can tell how old a horse is by the grove on its last incisor's.
There are many reason why the horse might of reared. Such as: The horse is in pain The horse got over excited The horse was scared
I seriously doubt it.
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.
Abscesses impede the horse's ability to walk normally. Abscesses are very painful, so horses will limp and will not run when they are in pain. However if the horse is given bute (a pain killer), the horse won't limp as much.
Its in pain
from what i can tell, an unproportional horse or a horse that is badly trained. its usually not their fault.
Any pressure applied along the back may result in negative behaviour from the horse - i.e. biting, kicking, bucking. When ridden, a horse with back pain may buck, rear, or bolt to try and escape the pain. If you are unsure call out a vet to investigate further, and if the pain is serious he/she may suggest a chiropractor.
To tell (or ask) your horse to trot is:"Aller au trotter."Translation is: To go into a trot.
Tell you to go tell them.
you can tell a horses age by its teeth.