How do you know how old a cat is?
As a pet owner, knowing your cat's age is crucial to taking care of their health and quality of life. However, many people often don’t know their actual age when adopting stray cats or acquiring cats from others. This article will give you a detailed introduction to how to determine the age of your cat and provide structured data to help you make a more accurate assessment.
1. Determine the age of a cat through its teeth

A cat's teeth are one of the most common ways to determine a cat's age. The following are the characteristics of cats’ teeth at different ages:
| age | dental characteristics |
|---|---|
| 2-4 weeks | Baby teeth start to grow in |
| 3-4 months | All baby teeth have grown in |
| 4-6 months | Permanent teeth begin to replace deciduous teeth |
| 6-12 months | All permanent teeth have grown in and the teeth are white and clean |
| 1-2 years old | Slight tartar begins to appear on teeth |
| 3-5 years old | Tartar is evident and may be slightly worn |
| 5-10 years old | The teeth are severely worn and may have periodontal disease |
| Over 10 years old | Teeth are severely worn and may be missing |
2. Determine the age of a cat through its eyes
A cat's eyes can also provide age clues. Young cats usually have clear and bright eyes, while older cats may have cloudy eyes or droopy eyelids.
| age | eye features |
|---|---|
| Kittens (0-6 months) | Eyes are clear, bright and colorful |
| Youth Cat (6 months-2 years old) | Eyes remain bright but may show slight changes |
| Adult cats (2-7 years old) | Eyes begin to become slightly cloudy |
| Senior cats (over 7 years old) | Eyes are significantly cloudy, possibly with cataracts |
3. Determine the age of a cat through its hair and body shape
Cats' coat and body shape also change with age. The following are the characteristics of different age groups:
| age | Hair and body features |
|---|---|
| Kittens (0-6 months) | The hair is soft and fluffy, and the body is thin. |
| Youth Cat (6 months-2 years old) | The hair becomes smooth and shiny, and the body becomes stronger and stronger |
| Adult cats (2-7 years old) | The hair begins to become rough and the body shape stabilizes |
| Senior cats (over 7 years old) | The hair is sparse and dull, and the body may become thinner or fatter |
4. Determine a cat’s age through behavior
Cats' behavior also changes with age. Young cats are usually lively and active, while older cats prefer silence.
| age | behavioral characteristics |
|---|---|
| Kittens (0-6 months) | Lively and active, curious |
| Youth Cat (6 months-2 years old) | Energetic and likes to play |
| Adult cats (2-7 years old) | Stable behavior, moderate activity level |
| Senior cats (over 7 years old) | Decreased activity, increased sleep time |
5. Comprehensive judgment of the cat’s age
When determining a cat's age, it's best to evaluate multiple characteristics. A single characteristic may vary depending on individual differences or health conditions. If you are unsure of your cat's age, it is recommended to consult a veterinarian for a professional evaluation.
Knowing your cat's age will not only help you take better care of them, but it can also help you prevent age-related health problems. I hope this article provides you with useful information and helps you get to know your feline friend better.
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