How To Tell A Horses Age By Teeth

One way to tell the age of a horse is by their teeth, because they continuously grow throughout their lives. When a horse is born, they are given non-permanent teeth called deciduous , which grow in as a foal, and begin to fall out and become replaced by their permanent teeth at an age of 3 1/2 . When the permanent teeth are set into place, they have a collection of molars, premolars, wolf teeth (which may be removed) canines and incisors. Calculating up to 36-40 teeth. When establishing a horses age by their teeth many defects come in the way, such as if they animal is housed (makes them seem younger) or if they were on open range (makes them seem older).

One Year and Younger

When a foal is born, it normally has no teeth, but that lasts for only a few days. Within the first week of a foals life four incisors will erupt, two lower, and two upper. these are the central incisors. The second set of incisors (the intermediate incisors) will then erupt within the first few weeks. The final set (the corner incisors) will arrive at about six months of age. A few weeks after birth, the foal also will erupt three cheek teeth or premolars in each section of the upper or lower jaw, which equals six upper and six lower. All together resulting in a set of twenty four teeth--six upper and six lower incisors and six upper and six lower premolars.

Five Years of Age

This is the age that a horse is considered to have a "full set of teeth" because, all of their permanent teeth have erupted are in wear.


From ages six the cups of the horses teeth begin to disappear in the lower centrals and laterals. Which are eventually gone at the age of eight. Once the equine hits age nine, the determination of age is very much more difficult.

Ten To Twelve

At this age, the bite slant that are in horses teeth becomes more "outward," than the perpendicular bite that is noticed in younger ages. When the horse reaches an age of twelve, the cups of the upper incisors have fully disappeared.

Fifteen Years

All cups that are in the teeth are long gone, and all of the teeth have become angular.

Twenty One Through Thirty

During these nine years, spaces between the teeth come and go, just as the angle of the teeth become more great. The Horse also starts to decrease in the number of teeth that he/she contains.


Now, I know this is not the 150% full proof to be able to tell the horses age by their teeth, but it contains almost all of the basics. I hope this video will help one understand exactly how to determine the age.

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