How to see the age of German shepherd

How can I tell the age of a German Shepherd? The general dog is to look at the teeth to estimate the age, under 2 months only mammary teeth (white, fine, sharp), 2-4 months to replace the incisors, 4-6 months to replace the canine teeth (white, rounded tips), 6-10 months to replace the molars 1 year old teeth grow, white and shiny, incisors without cusps, 2 years old lower incisors cusps partly worn flat, 3 years old upper incisors cusps partly worn flat, 4-5 years old upper and lower incisors began to wear a slight bevel and Yellowing, 6-8 years old incisors grinding exposed roots, canine teeth yellowing wear; lip dog teeth wear related to age, the older, the more serious the wear. 1, the wear and tear of the teeth, the dog was born ten days after the birth of mammary teeth, two months later began to be gradually replaced by incisors, canines, molars for permanent teeth, 8-10 months permanent teeth for all, but it takes 1.5 years after the teeth to grow solid. It does not matter if the puppy swallows the replaced milk teeth, because they are soft and the dog’s stomach and intestines can digest them. Relying on teeth to estimate the age of the dog can refer to the following table: age dental characteristics 2 months of age only the milk teeth (white, fine, sharp), 2-4 months to replace the incisors, 4-6 months to replace the canine teeth (white, rounded tips), 6-10 months to replace the molars 1 year old teeth grow, white and shiny, incisors without cusps 2 years old lower incisors cusps partly flattened 3 years old upper incisors cusps partly flattened, 4-5 years old upper and lower incisors began to wear The incisors are slightly beveled and yellowed, 6-8 years old incisors grinding exposed roots, canine teeth yellowing wear lip dog teeth wear related to age, the older the age, the more severe the wear. But also to see that this has a lot to do with the nature of the animal’s food, such as often eat soft food and often gnawing bones, the dog’s teeth wear is not the same, so it can only be used as a reference. 2, facial expressions age in about 1 year old dog, active expression, eyes, good movement. 2-4 years old dog, affectionate close to people, refreshed, enthusiastic. The older dogs are more than 7 years old, sluggish, slow to respond to stimuli, reluctant to move more, eyes are not looking. 3, physical posture of young dogs when the body is moving light and handy, 2-5 years old when the activity is a little clumsy, but stable, safe and reliable. 10 years old dogs, sluggish demeanor, hunchback or back flexion, walking slowly. 4, the occurrence of old hair refers to the emergence of gray hair (that is, the original non-gray hair of the dog becomes gray hair), the first occurrence of the lip area, jaws. The first occurrence in the lip area, jaw area. 4-5 years old dogs began to see a few white hair, 5-6 years of age significantly increased, later spread to the back, around the nose, eyelids, eyebrows, etc., and then further extended to the forehead and the outer ear canal in the long white hair, and even the entire head hair becomes white. Dogs over 10 years of age have a lot of white hair on the forehead, face and the front of the head. Over 13 years of age, the entire head becomes white (there are individual dogs that remain the same color at 10-14 years of age). For dogs with white, yellow and white hair or chestnut with white spotted hair, hair color change cannot be used as an aid to age judgment. 5, eyes young dogs with bright eyes, dogs over 7 years old with cataracts in their eyes, more incidence of cataracts over 8 years old, most dogs 9-10 years old with cataracts, dogs over 10 years old, almost all have cataracts. Early cataracts have a blue-green ring in the crystal body. Typically, they are central or pericentral cataracts with cloudy gray or off-white crystals and a distinct green refractive reflection. Individual dogs 1-1.5 years of age have also developed cataracts. To use teeth to determine the age of a dog requires three conditions: the teeth should have a normal bite; be fed dog food or dog bones; and not have periodontal disease. Generally speaking, the puppy’s milk teeth have 28, at three weeks of age it will grow canine teeth, one and a half months old molars, four months old for the first incisor, four and a half months old for the second incisor, five months old for the third incisor, six months old for canine teeth, when the dog is seven months old, all 42 permanent teeth have been fully grown, into the mature stage. At one and a half years old, the tips of the lower first incisors are worn; at two and a half years old, the tips of the lower second incisors are worn; at three and a half years old, the tips of the upper first incisors are worn; at four and a half years old, the tips of the upper second incisors are worn. Five years old, the lower first and second incisors have been worn into a square; six years old, canine teeth grinding blunt, the lower third incisor tip wear; seven years old, the lower first incisor has been worn to the root; eight years old, the lower first incisor wear face forward tilt; ten years old and above, it is impossible to determine its age through the teeth.