How can I tell the age of a German Shepherd? The age of a German Shepherd can be judged by the state of its teeth: the milk teeth under 2 months of age are white and small, all the teeth are replaced and grow neatly in 3-10 months; the upper and lower incisors are partially worn down at 2-3 years of age, the lower incisors gradually turn yellow at 4-5 years of age, and the roots are exposed at 6-8 years of age; after 8 years of age, the teeth begin to fall out and the dog enters old age. The age of the dog can be determined based on the growth, wear and loss of teeth. Generally speaking, before 3 weeks of age, the puppy has no teeth; by 4 weeks of age, the incisors grow in; by two months, all the milk teeth grow in. The milk teeth are white, thin and pointed, with 28 teeth, namely 12 milk incisors, 4 milk canines and 12 milk premolars. At 2 to 4 months of age, the first incisors are replaced; at 5 to 6 months of age, the second and third incisors and canine teeth are replaced; at 8 months of age, all permanent teeth are replaced; at 1 year of age, the permanent teeth are complete, white and shiny, with cusps on the incisors; at 1.5 years of age, the large cusp of the first mandibular incisor is worn down to be flush with the small cusp, which is called cusp wear. At the age of 5, the cusp of the third mandibular incisor is slightly worn and the wear surface of the first and third mandibular incisors is rectangular. At 15 years of age, the incisors were lost, the canines were incomplete, and the roots were yellowed.
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