The Westphalian is a warmblood breed that undergoes significant physical transformation between weaning and maturity. Most Westphalian foals are weaned between four and six months of age, and from that point forward, growth occurs in uneven spurts that can make the young horse appear temporarily awkward or unbalanced. It is common for the hindquarters to grow taller than the front end for a period, giving the youngster a downhill appearance that resolves as the forequarters catch up.
By the end of the first year, a Westphalian youngster will have reached a substantial portion of its adult height but will continue to fill out and develop muscularly for several more years. Bone density, tendon strength, and joint maturity lag behind visible height gains, which is why premature physical demands can cause lasting damage. The growth plates in a Westphalian's legs do not fully close until the horse is between three and five years of age, depending on the individual.
Regular body condition assessments help ensure that the young Westphalian is growing at an appropriate rate. Rapid weight gain can place excessive stress on developing joints and growth plates, while insufficient nutrition can stunt growth and compromise immune function. Maintaining a moderate, steady growth curve is the goal during this phase.
Conformation evaluations during the juvenile period provide insight into the horse's future potential as a sport horse. Breeders and owners often have young Westphalians assessed at breed inspections or keuring events, where judges evaluate movement, structure, and type. These assessments can guide decisions about the horse's future training path and career direction.