How do you tell the age of a German Shepherd? Most dogs judge their age by looking at their teeth. Those under 2 months old only have deciduous teeth (white, thin, and sharp). They replace their incisors at 2-4 months and canine teeth (white, sharp) at 4-6 months. The cusps of the teeth are rounded and blunt), molars are replaced at 6-10 months. At 1 year old, the teeth are all straight, white and bright. The incisors have no cusps. At 2 years old, the cusps of the lower incisors are partially smoothed. At 3 years old, the cusps of the upper incisors are partially smoothed. 4-5 The upper and lower incisors begin to wear slightly beveled and turn yellow at the age of 6-8 years old. The incisors are exposed at the root and the canine teeth are yellowed and worn at the age of 6-8 years. The tooth wear of labial dogs is related to age. The older the age, the more serious the wear. .
1. The wear and tear of teeth. Dogs give birth to deciduous teeth within ten days after birth. From two months on, the incisors, canines, and molars begin to gradually change into permanent teeth. In 8-10 months, all the permanent teeth will be replaced. However, it takes one and a half years for the teeth to grow and strengthen. It doesn't matter if the puppy swallows the replaced deciduous teeth, because the deciduous teeth are soft and the dog's gastrointestinal tract can digest them.
To estimate the age of a dog based on its teeth, please refer to the following table: Age Dental Characteristics: Under 2 months old, only deciduous teeth (white, thin, sharp) are replaced, incisors are replaced at 2-4 months, and canine teeth (white, sharp teeth) are replaced at 4-6 months. (tips are rounded and blunt), molars are replaced at 6-10 months. 1-year-old teeth are straight, white and bright, and the incisors are not pointed. 2-year-old lower incisors are partially flattened. 3-year-old upper incisors are partially flattened. 4-5 years old. The lower incisors begin to wear and become slightly beveled and turn yellow. At the age of 6-8, the incisors grind to expose the roots of the teeth, and the canine teeth turn yellow and wear the lips. The tooth wear of dogs is related to their age. The older they are, the more serious the wear will be. However, it should also be noted that this has a lot to do with the nature of the animal's food. For example, if the dog often eats soft food and chews bones, the wear and tear of the dog's teeth will not be common, so it can only be used as a reference.
2. Dogs whose facial expressions are about 1 year old have lively expressions, bright and active eyes. Dogs aged 2-4 years old are close to people, energetic and caring. Old dogs older than 7 years old have sluggish energy, slow response to stimulation, unwillingness to move much, and dull eyes.
3. Body posture: Young dogs are light and delicate when exercising. When they are 2-5 years old, they are a bit clumsy when exercising, but they are steady, safe and secure. Senior dogs over 10 years old will move slowly, have a crooked or bent back, and walk slowly.
4. The occurrence of senile hair refers to the appearance of gray and white hair (that is, dogs with originally non-gray hair turn into gray and white hair), which first occurs in the lip and mandibular areas. Dogs aged 4-5 years old begin to see a few white hairs, and the number increases significantly at the age of 5-6 years old. It then spreads to the back, around the nose, eyelids, eyebrows, etc., and then further expands to white hairs on the forehead and in the external auditory canal. , so that all the hair on the head turns white. Dogs over 10 years old have a lot of white hair on their forehead, face and front of their head. All heads turn white after the age of 13 (there are also dogs whose coat color remains unchanged between the ages of 10 and 14). for whiteFor dogs with white, yellow and white hair or chestnut hair with white spots, coat color change cannot be used as an auxiliary method for age estimation.
5. Dogs with young eyes have bright and clear eyes. Cataracts appear in the eyes of dogs over 7 years old. Cataracts occur more frequently in dogs over 8 years old. Most dogs aged 9-10 years old have cataracts. Almost all dogs over 10 years old have cataracts. There are cataracts. The lens of early cataract appears as a blue-green ring. Typical cataracts are central or peripheral, the lens pollution is gray or off-white, and there is obvious green refraction.
Dogs between 1 and 1.5 years old may also suffer from cataracts. To use teeth to judge the age of a dog, three conditions are required: the bite of the teeth must be normal; dog feed or dog bones must be fed; and there must be no periodontal disease.
Generally speaking, a puppy has 28 deciduous teeth. It will grow canine teeth at three weeks of age, molars at one and a half months old, first incisors at four months old, and second incisors at four and a half months old. The third incisor is replaced at the age of five months, and the canine teeth are replaced at the age of six months. When the dog is seven months old, all 42 permanent teeth have been fully grown and it has entered the mature stage. At one and a half years old, the cusps of the lower first front teeth are worn; at two and a half years old, the cusps of the lower second front teeth are worn; at three and a half years old, the cusps of the upper first front teeth are worn; at four and a half years old, the cusps of the upper second front teeth are worn. At five years old, the lower first and second incisors have been worn into square shapes; at six years old, the canine teeth are blunted, and the cusps of the lower third incisors are worn; at seven years old, the first lower incisors have been worn down to the gums; at eight years old, the lower first incisors have been worn to the gums; The wear surface of the first incisor is tilted forward; over the age of ten, it is impossible to judge the age of the child through the teeth.