How can I tell the age of an English Cattle Dog? In general, the distribution of permanent teeth in adult dogs: 6 upper and lower incisors, 2 upper and lower canines, 8 upper and lower premolars, and 4 molars in the upper jaw and 6 in the lower jaw, for a total of 42 teeth. The distribution of the number of molars in young dogs: 6 incisors on the top and bottom, 2 canines on the top and bottom, and 6 premolars on the top and bottom, for a total of 28 teeth. The age of the adult dog is most evident in the growth, wear, and sharpness of the teeth. The age of the puppy can be judged from the number, strength, newness, and brightness of the canine teeth. The age of the dog is roughly determined by the following criteria: Around 20 days, the teeth grow out unevenly, 30-40 days, the milk incisors are complete, 2 months, all the milk teeth are complete, thin and soft white, 2-4 months, the first milk incisors are replaced, 5-6 months, the second and third milk incisors are replaced, and the second and third milk teeth are replaced. At 1.5 years of age, the cusps of the first mandibular incisor are worn out. At the age of 6 years, the cusps of the third mandibular incisor were worn out and the canine was bluntly rounded.
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