How do you tell the age of a Rottweiler? Generally speaking, look at the teeth. A Rottweiler begins to produce deciduous teeth after more than ten days of birth. After two months, the incisors, canines, and molars begin to gradually change into permanent teeth. The incisors are replaced at 2-4 months, and the incisors are replaced at 4-4 months. The canine teeth are replaced in 6 months, and the permanent teeth are replaced in 8-10 months. It takes about 1 and a half years for all the Rottweiler's teeth to grow fully and strong.

When a Rottweiler is 30-40 days old, its deciduous incisors will gradually grow in. At 2 months old, all deciduous teeth will grow in, and the teeth will be thin and white.

At 4 months of age, the first deciduous incisor will be replaced; at 5-6 months of age, the second and third deciduous incisors and all deciduous canines will be replaced.

Over 8 months old, all teeth will be replaced by permanent teeth. At 1 year old, the permanent teeth are all long, smooth and strong, with sharp protrusions on the upper part of the incisors; at 1.5 years old, the peak of the first incisor tooth of the mandible disappears. At 2.5 years old, the peak of the second mandibular incisor disappeared.

At 3.5 years old, the peak of the maxillary first incisor was lost. At 4.5 years old, the peak of the maxillary second incisor was lost. At the age of 5, the peak of the third mandibular incisor was slightly worn, and at the same time, the first and second mandibular incisors were ground into a rectangular shape. 6 years old, the peak of the third mandibular incisor is obliterated and the canine teeth are blunt and rounded;

At the age of 7, the first incisor tooth of the mandible was worn to the root of the tooth, and the wear surface was vertically oval. At the age of 8, the first incisor of the mandible was worn and tilted forward.

At 10 years old, the wear surfaces of the second mandibular and first maxillary incisors were longitudinally oval. At the age of 16, the incisors were lost and the canines were incomplete. At the age of 20, the canine teeth fell out.