How can I tell the age of a Beagle? Generally speaking, the Beagle’s teeth will gradually grow out unevenly at about 20 days after birth; at 30-40 days, its milk incisors will gradually grow in; at 4 months of age, the first milk incisor will be replaced; at 8 months of age, all teeth will be replaced with permanent teeth; and when the Beagle is 1 year old, the permanent teeth will grow in. The age of the Beagle is roughly determined by the following criteria: around 20 days, the teeth gradually grow 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 incisor is replaced; 5-6 months, the second and third milk incisors and all the milk teeth are replaced. At 1.5 years of age, the cusps of the first mandibular incisor are worn out. at 2.5 years of age, the cusps of the second mandibular incisor are worn out. at 3.5 years of age, the cusps of the first maxillary incisor are worn out. at 4.5 years of age, the cusps of the second maxillary incisor are worn out. at 5 years of age, the cusps of the third mandibular incisor are worn out. at 5 years of age, the cusps of the third mandibular incisor are worn out. At age 6 years, the cusps of the third mandibular incisor were worn out and the Beagle canine was bluntly rounded. At age 20, the canine teeth were lost.
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