when do horses start teething
Between the age of 21/2 and 41/2 years of age, the horse will shed 24 baby teeth â both premolars (cheek) and incisor (front) teeth. These teeth are replaced by adult teeth.The first teeth to change will be the central incisors â both upper and lower.n 2 to 4 year old horses, the teething changes can be evident from the outside of the mouth in the way of eruption bumps under the lower jaw (mandible).