How to judge the age of an adult Golden Retriever? The age of an adult Golden Retriever can be judged by the development of the teeth. At 1 year old, the permanent teeth are all long, smooth and strong, and there are sharp protrusions on the upper part of the incisors; at 1.5 years old, the peak of the first incisor tooth of the lower jaw is obliterated; at 3.5 years old, The peak of the first maxillary incisor is worn away; at 4.5 years old, the peak of the second maxillary incisor is worn away; at the age of 5, the peak of the third mandibular incisor is slightly worn, and at the same time, the first and second mandibular incisors are worn into a rectangular shape.

At 1 year old, the permanent teeth are all long, smooth and firm, with sharp protrusions on the upper part of the incisors; at 1.5 years old, the peak of the first mandibular incisor is obliterated. 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. At 6 years old, the peak of the third mandibular incisor was lost and the canine teeth were 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 in shape. At the age of 16, the incisors were lost and the canines were incomplete. 20 years old, canine teeth lost;

Adult dogs are quite big. Golden retrievers themselves are large dogs, with a length of about 55-61 centimeters and a weight of about 26-31.5kg for male dogs and 25-27kg for female dogs.