1. teeth dog’s teeth are like the tree wheel, is the most important source of information to determine its age. So the owner can open the dog’s mouth in the case of ensuring their own safety, to see the condition of its teeth (the number and wear, color, the state of the gums), and then the following table to roughly calculate the age of the dog. Ten days after birth that the birth of milk teeth, two months later, the incisors, canines, molars gradually replaced by permanent teeth, 8 to 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. Estimation of dog age by teeth table. If its teeth should all be replaced with permanent teeth and they are all relatively sharp (cusps), it proves that it should have just reached adulthood (about 1 year old); if the cusps of the second incisor in the lower jaw are worn down (cusps worn out), it is about 1.5-2.5 years old; if the cusps of the first incisor in the upper jaw are worn out, it is about 3.5 years old and the second incisor is worn out, it is about 4.5 years old; if the cusps of the third incisor in the lower jaw are slightly worn out, the lower jaw The first and second incisors have worn down to a flat surface, about 5 years old; if the third incisor of the lower jaw is worn down to a blunt circle, about 6 years old; if the first incisor of the lower jaw is worn down to the root and the wear surface is longitudinally oval-shaped, about 7 years old; if the first incisor of the lower jaw is worn down to an anterior slant, about 8 years old; dogs over 10 years old basically start to lose their teeth, the incisors wear down to become very small pieces and the teeth will yellow, if they are not well Oral care of older dogs will even have bad breath, a large number of dental calculus, red and swollen gums and even periodontitis. 2. hair color and nose like people, people will have gray hair when they get old, dogs are also. Especially Golden, Labrador and other dogs with darker hair, the hair will turn white when they get old, and the color of the original black nose will slowly become lighter, or even turn into a white nose. The emergence of gray hair (that is, the original non-gray hair of the dog into gray hair), first occurred in the lip area, jaw area. 4-5 years old dogs began to see a few white hair, 5-6 years old when significantly increased, later diffused to the back, around the nose, eyelids, eyebrows, etc., and then further expanded to the forehead and the outer ear canal in the long white hair, and even the entire head The 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 also individual dogs that remain the same coat color at 10-14 years of age). For dogs with white, yellow-white hair or chestnut with white spotted hair, the change in hair color cannot be used as an aid to age judgment. 3. Skin condition is also like people, when young, of course, the skin blows, pink and elastic, but old dogs skin elasticity will become worse, some dogs will have melanin deposition (age spots). The hair becomes fragile. 4. body, movement of older dogs are less leggy, the amount of movement is also greatly reduced. Younger dogs are lighter and more agile when they are active, and somewhat clumsy when they are 2-5 years old, but stable, safe and reliable. older dogs over 10 years old are sluggish, hunchbacked or bent back, and walk slowly. 5. facial expressions of dogs aged around 1 year old, with active expressions, eyes and good movement. 2-4 years old dogs, affectionate and close to people, glowing spirit, enthusiasm. Older dogs older than 7 years old are mentally sluggish, slow to respond to stimuli, reluctant to move much, and have listless eyes.
