The Malinois must be at least 1 and a half years old to fully develop and mature. The fastest growth rate is when they are 5-8 months old. Until 10 months old, the body will enter slow growth. At this time, the body will almost become It has been finalized and will not change significantly. Generally speaking, 2-3 years old is the peak period of a horse dog's physical condition, but in terms of training, when a horse dog is 8-9 months old, it is already in its prime. It’s the golden period of training.