How to tell if a dog is fully grown? - briefly
To determine if a dog is fully grown, check its size compared to its breed's average adult weight and height. Additionally, observe whether the growth plates on the long bones of the legs have closed, which typically happens when a dog reaches maturity.
How to tell if a dog is fully grown? - in detail
To determine if a dog is fully grown, consider several factors that collectively indicate maturity. Firstly, examine the dog's size in relation to its breed and age. Consult a growth chart specific to the breed, which can provide a general timeline for physical development. For example, smaller breeds typically reach full size by 6-8 months, whereas larger breeds may take up to 18-24 months.
Next, observe the dog's bone structure and proportions. Fully grown dogs have well-defined bones and their bodies are in proportion. Immature dogs may appear gangly or have disproportionate features as they continue to grow. Additionally, check for the closure of growth plates, which are cartilaginous areas at the ends of long bones that indicate ongoing growth. Once these plates close, usually by 12-18 months depending on the breed, further lengthening of the bone is not possible.
Another important indicator is the dog's coat and teeth. A fully grown dog will have a mature coat with no signs of puppy fur. The teeth should be fully developed and free from any signs of baby teeth. Typically, by 6-8 months, all baby teeth are replaced by adult teeth in smaller breeds, while larger breeds may take up to 12 months.
Behavioral maturity is also a significant factor. Fully grown dogs exhibit more stable and predictable behavior compared to puppies. They are less prone to impulsive actions and have better control over their emotions. This maturity is usually evident by the time the dog reaches 18-24 months, regardless of breed.
Lastly, consult with a veterinarian for a professional assessment. A vet can provide insights based on the dog's medical history and physical examination. They may use diagnostic tools like X-rays to confirm the closure of growth plates or assess any underlying health issues that could affect growth.