How to calculate Teddy’s age? Teddy’s age comparison table

Jul 26,2025
5Min

How to calculate Teddy's age

Teddy's age calculation table


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Criteria for judging Teddy’s age

Teeth will gradually grow unevenly in about 20 days.

In 30-40 days, the deciduous incisors will grow in full.

At 2 months old, all the deciduous teeth have grown in, are pointed and tender white.

In 2-4 months, the first deciduous incisor is replaced.

In 5-6 months, the second and third deciduous incisors and all deciduous canines are replaced.

Over 8 months old, all teeth are replaced by permanent teeth.

1 year old, permanent teeth are long, smooth and strong, with sharp protrusions on the upper part of the incisors

At 1.5 years old, the peak of the first mandibular incisor disappeared.

At the age of 2.5 years, the peak of the second mandibular incisor disappeared.

At 3.5 years old, the peak of the maxillary first incisor disappeared.

At 4.5 years old, the peak of the maxillary second incisor was lost.

At the age of 5, the peak of the third mandibular incisor was slightly worn, and at the same time, the first and second mandibular incisors were ground into a rectangular shape.

At the age of 6, the peak of the third mandibular incisor was lost and the canine teeth were blunt and rounded.

At the age of 7, the first incisor tooth of the mandible was worn to the root of the tooth, and the wear surface was vertically oval.

At the age of 8, the first incisor of the mandible was worn and tilted forward.

At 10 years old, the wear surfaces of the second mandibular and maxillary first incisors were longitudinally oval.  

At the age of 16, the incisors were lost and the canines were incomplete.

20 years old, canine teeth lost
Teddy dogs generally have a life span of 12 to 15 years

The age of a Teddy can be determined by his face

A dog aged around 1 year old has an active expression, bright eyes and is 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. Body posture: Young dogs are light and nimble when moving. When they are 2-5 years old, their movements are somewhat clumsy, but they are stable, safe and reliable. Elderly dogs over 10 years old have sluggish behavior, crooked or bent backs, and walk slowly.

Old Teddy can pass fur-colored feces

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), which 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 the age of 5-6 years old, and then spreads to the back, around the nose, eyelids, eyebrows, etc., and then further extends to the forehead and external auditory canal, and even 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. Over the age of 13, 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.


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