Progression of Equine Skeletal Development
Before backing your young horse, please read!!
A horse ages roughly 3 times faster than a human.
So a 90 year old human is a 30 year old horse. Both very old, usually arthritic, don’t have many of their original teeth left, and very likely retired and enjoying the finer things in life.
A 25 year old horse is a 75 year old human. Some are still happily working but some prefer retirement and an easier life. Often depending on just how hard a life they’ve lived.
A 20 year old horse is a 60 year old human. At that point where the body doesn’t work like it use to but the brain is all there and wants to be active.
A 13 year old horse is a 39 year old human. Middle aged, prime of their life where their knowledge and physical ability are about equal.
So let’s get down to the babies and work our way up.
A 1-1.5 year old horse is getting their first adult tooth, this happens at 6 years old in a human child.
A 3 year old horse is a 9 year old child. A child. Not ready for work by a long stretch. We have moved past sending children down the mines.
A 4 year old horse is a 12 year old child. Often will do odd jobs for pocket money, maybe a paper round, mowing lawns etc. Basically a 4 year old horse can start a bit of light work experience to learn the ropes.
A 5 year old horse is a 15 year old teenager. Think they know it all, cocky, and ready to up their work and responsibilities. Still quite weak and not fully developed so shouldn’t be at their physical limit but can start building strength.
A 5.5 year old horse has just cut their final adult tooth, this happens at 17 years of age in a human.
A 6 year old horse is an 18 year old human. An adult. Ready to work.
An 8 year old horse has achieved full fusion of their final growth plates. This happens at 24 years of age in a human. This is the age it is safe to push a horse for their optimal performance.
Pushing your youngster too hard too young will result in the failure of many body parts. Joints, spine, tendons, ligaments as well as their brains. Waiting another year or two at the beginning could give your horse an extra 10 years of useful working life. Be patient with your pride and joy!
SOURCE: Vikki Fowler BVetMed BAEDT MRCVS