Determining the age of a Pekingese can be achieved by observing several key physical characteristics, including their teeth, body condition, and coat. Generally, puppies have 28 teeth, while adult dogs have 42. Young Pekingese are typically energetic and playful, while older ones tend to be slower and less agile. You might also notice graying around the muzzle of an older Pekingese.

1. Examining the Teeth
Counting teeth is a straightforward way to approximate a Pekingese's age. Puppies start getting teeth at around 19 days old. By two months, they should have a full set of 28 milk teeth. Permanent teeth start replacing the milk teeth around 9-10 months, resulting in a total of 42 adult teeth.
2. Assessing Body Condition
Young Pekingese puppies are light and nimble. Between the ages of 2 and 5, they become somewhat less agile but move with more stability. If a Pekingese appears sluggish, has a hunched back, or moves slowly, they are likely over 10 years of age.
3. Observing the Coat
Around 4-5 years of age, a Pekingese may start developing a few white hairs. This increases to noticeable levels by age 5-6. If the majority (around 70%) of the fur on the head is white, then the dog is likely over 10 years old. A completely white head indicates the dog is likely 13 years old or more.
When Do Pekingese Reach Adulthood?
Pekingese dogs are considered fully grown adults around 12 months old. They typically experience their first heat cycle around 8 months of age, marking sexual maturity. However, their physical development is generally not complete until they are closer to 12 months old, at which point they can be considered true adults. Understanding these developmental stages helps in providing the best care for your Pekingese throughout their life, whether you have a young puppy or a senior companion.