Here's a general guideline:
* Small breeds: Typically reach their full size between 6 months and 1 year old.
* Medium breeds: Usually stop growing between 1 and 2 years old.
* Large breeds: Can continue growing for up to 2-3 years, and some giant breeds may even take longer.
Factors affecting growth:
* Breed: Genetics plays a major role in determining a dog's final size.
* Nutrition: A balanced diet rich in essential nutrients is vital for healthy growth.
* Health: Medical conditions can impact a dog's growth rate.
* Sex: Males generally grow larger than females.
Signs of maturity:
* Skeletal maturity: The growth plates in their bones have closed.
* Weight stabilization: No significant weight gain or loss.
* Hormonal changes: Adult hormones begin to dominate.
* Behavioral changes: Mature dogs exhibit calmer and more stable behavior.
It's important to consult a veterinarian: They can provide accurate growth assessments and address any concerns about your dog's development.