How much growing does a 16 week old kitten have until fully grown?

It's difficult to give an exact answer to how much a 16-week-old kitten will grow because it depends on the breed, genetics, and individual kitten. However, here's some general information:

* Most cats reach their full size by 12 months old.

* Growth slows down significantly after 6 months. So, a 16-week-old kitten is likely nearing the end of their rapid growth phase.

* Smaller breeds will typically be fully grown sooner than larger breeds.

What to expect:

* Height and weight: While most of their growth in height and weight is likely done, they may still gain a bit more, especially if they are a larger breed.

* Muscles: Their muscles will continue to develop and become more defined even after their growth spurt.

* Personality: Their personality will continue to develop as they mature and gain experience.

Important Note: It's always a good idea to talk to your veterinarian about your kitten's growth and development. They can monitor your kitten's progress and offer advice specific to their individual needs.