How to calculate the age of a Cocker Spaniel? You can mainly judge the age of a Cocker Spaniel through its teeth: Generally speaking, the teeth of a Cocker Spaniel will gradually grow in about 20 days after birth, and its deciduous teeth will gradually grow in 1-4 months; At the age of 4 months, the deciduous teeth will begin to be replaced by permanent teeth. At the age of 8 months, all the teeth will be replaced by permanent teeth. When the Cocker Spaniel is 1 year old, the permanent teeth will all grow in.

1. Teeth

Ordinary puppies will lose their deciduous teeth 5-7 months after birth and give birth to permanent teeth. Therefore, if a puppy's deciduous teeth have fallen out and the permanent teeth have not yet been exposed or not much is exposed, the puppy is generally only 5-6 months old. If all the fangs are fully grown, the age is about 8-12 months. Before adulthood, the growth state of the teeth shows the increase in the dog's age, but once it reaches adulthood, the identification of the dog's age can be determined by the wear state of the teeth.

Therefore, identifying the age of a dog requires certain practice and observation experience. In general, in adult dogs over 3 years old, the upper and lower joints of the front teeth of the upper jaw and lower jaw are worn. In adult dogs over 4 years old, the upper and lower joints of the front teeth often become flat due to wear. For 7-8 year old dogs, the age of the dog can be determined based on the length of the canine teeth.

　2. Facial expression

Dogs aged about 1 year old have active expressions, bright eyes, and are active. Dogs aged 2-4 years old are approachable, energetic and enthusiastic. Old dogs older than 7 years old have sluggish energy, slow response to stimulation, unwillingness to move much, and dull eyes.

　3. Hair condition

The occurrence of senile hair refers to the appearance of gray and white hair (that is, the original non-gray hair of dogs turns into gray and white hair). It first occurs in the lip area and mandibular area. Dogs aged 4-5 years old begin to see a few white hairs, and the number increases significantly at 5-6 years old. Later, it spreads to the back, around the nose, eyelids, eyebrows, etc., and then further extends to the forehead and external auditory canal. The hair on the entire head turns white. Dogs over 10 years old have a lot of white hair on their forehead, face and front of their head. After 13 years old, the entire head turns white (some dogs still have the same coat color when they are 10-14 years old). For dogs with white, yellow and white hair or chestnut hair with white spots, coat color change cannot be used as an auxiliary means to judge age.