How do you tell the age of a German Shepherd? Judging based on the condition of the canine teeth: deciduous teeth under 2 months old are white and small, all canine teeth have been replaced and grown neatly between 3-10 months old; at 2-3 years old, the tips of the upper and lower incisors are smoothed, and 4- The lower incisors gradually turn yellow at the age of 5, and the roots of the teeth are exposed at the age of 6-8. After the age of 8, the canine teeth begin to fall out, and the child officially enters old age.

Based on the growth, wear and loss of teeth, the age of a dog can be judged. Generally speaking, puppies before 3 weeks of age have no teeth; by 4 weeks of age, all incisors are in full length; by two months of age, all deciduous teeth are in full length. The deciduous teeth are white, thin and pointed. There are 28 deciduous teeth in total, namely 12 deciduous incisors, 4 deciduous canines, and 12 deciduous premolars. Puppies have no back molars.

At 2 to 4 months old, the first deciduous incisor is replaced; at 5 to 6 months old, the second and third deciduous incisors and deciduous canines are replaced; at 8 months and above, all permanent teeth are replaced.

The 1-year-old’s permanent teeth are all long, white and bright, and there are sharp protrusions on the incisors.

At 1.5 years old, the large peak of the first mandibular incisor wears to the same level as the small peak. At this time, it is called peak obliteration.

The peak of the mandibular second incisor is lost at 2.5 years old; the peak of the maxillary first incisor is lost at 3.5 years old; the peak of the maxillary second incisor is lost at 4.5 years old.

At 5 years old, the peak of the third mandibular incisor is slightly worn, and the wear surfaces of the first and third mandibular incisors are rectangular.

At 6 years old, the peak of the third mandibular incisor has disappeared and the canine teeth are blunt and rounded.

7-year-old mandibular first incisor is worn to the root of the tooth, and the wear surface is oval.

8-year-old mandibular first incisor is worn and tilted forward.

The wear surfaces of the second mandibular incisor and the first maxillary incisor at the age of 10 were longitudinally oval in shape.

At the age of 15, the incisors were lost, the canines were incomplete, and the roots of the teeth were yellow.