1, first look at the size of the spike, the size of the whole tooth is between 4,5 cm-6 and 3cm, and the root is healed. Subadult teeth are about 1 year when the size is 3cm-4 and 3cm, and the root is hollow to nearly healed. The young spike below 2.5cm is just the cusp (crown), the deciduous teeth have just fallen off, and the roots have just begun to form, 6-7 months old.

2. Look at the proportion. The ratio of upper canine teeth to wolves is 1, 2: 1 or 1: 1. Because the root is not fully mature, it is still developing. Adult wolves are 1: 1 (4-7 years old) or 1: 1, 2 (the total length is greater than 5,5-6,3cm), 1: 1,/kloc-.

3, look at the spike crack: there are transverse fine cracks in the crown, and the cracks are limited to the enamel surface of the crown, mostly bloody.

4. According to the type of root, the spike root is full, but full and not empty, with few depressions on both sides and symmetrical radians. Women's teeth are smoother and ringed, but smoother than dogs. The root angle of male teeth is textured and thick, but the surface is not rough.

5, look at the cusp, the wolf's crown is long and sharp, the inner edge of the tooth is obvious, and the connection between the crown and the root is not obvious.