Who can you tell how old horses are?

Answer 1

A veterinarian or someone who knows a lot about horses can tell you how old they are. A vet would check the age of a horse in a pre-purchase examination. You can also check the age of a horse if they have registration papers. All breed societies have the age of a horse on its papers Happy to help, Double J Farms

Answer 2

you tell by what size their teeth are and sometimes their tail

cut off its leg an count the rings.