How to determine the age of the butterfly dog? The size of the butterfly dog is mainly judged by the growth of teeth, tooth crest and tooth wear, shape and color, etc.; about 20 days to start teething, 4 to 6 weeks of age, the milk incisors are complete, 2 to 4 months of age to start replacing the milk teeth, after 8 months of age, all permanent teeth, 1 year old permanent teeth are complete, 1.5 years old began to have tooth cusps worn out. In order to facilitate the grasp, the method of determining the age of the dog is introduced as follows: about 20 days to start teething. 4 to 6 weeks old: the mammary incisors are fully grown. Nearly 2 months of age, all the milk teeth are white, thin and pointed. 2 to 4 months of age: the first milk incisors are replaced. 5 to 6 months of age: the second and third milk incisors and milk canine teeth are replaced. 8 months of age: all permanent teeth are replaced. 1 year of age: permanent teeth are complete, white and shiny, with cusps on the incisors. 1.5 years of age: the cusps of the first mandibular incisors are worn down to flush with the small cusps, a phenomenon called cusp wear. 2.5 years of age: the cusps of the mandibular 10 years old: wear surface of mandibular second and maxillary first incisors is longitudinally oval. 16 years old: loss of incisors and incomplete canines.
