At six months of age, your kitten may look like a little adult, but that doesn’t mean it has reached its adult size. The basic rule of thumb is that the average-sized cat will gain about 1 pound a month, so at six months of age, your kitten should weigh about 6 pounds with a lanky torso and legs. It may seem a little disproportionate, but your kitten will soon grow into its long legs and body just like a human preteen does.
Once you’ve adopted a cat or kitten, your world will never be the same. This cute little ball of fur will bring you joy and memories to last a lifetime. Before long, your kitten will grow into a cute and awkward teenage cat. Later, he’ll develop into a more mellow but adventurous adult full of play and snuggles. At what age can you expect your cat to stop growing? Every cat is unique, but there are some general guidelines to clue you in to how big your kitten will get and at what age he’ll be fully grown.
Baby teeth may still be present, but some kittens will lose them all by the time they are six months old. Some veterinarians will recommend extracting any baby teeth that remain in your kitten’s mouth when it gets spayed or neutered.
When Is It Fully Grown, And When Do Cats Stop Growing?
Cats can be considered adults around the time their growing slows down, between 9 and 12 months. Sexual maturity in kittens is reached fairly quickly, coming anywhere between 6 and 9 months.
Keep an eye on weight and length to determine when your cat stops growing, and be cautious of him or her around members of the opposite sex if you have not had your cat spayed or neutered – they become sexually active much quicker than you might expect!
Are Indoor Cats Bigger Than Outdoor Cats?
Supposing one cat from a litter is left to be an outdoor cat, and one cat from the same litter is raised indoors, there’s not going to be an immense difference in their growth. However, you might expect the outdoor cat to be on the lighter side, simply because the indoor cat is presumably being fed everyday (and potentially overfed) by it’s proud human.
The outdoor cat will need to fend for itself. Of course cats are evolved to live outdoors and eat wild animals like mice and rabbits, so it’s not bad for a cat to have to fend for itself! It might just go hungry from time to time, as is the way of things in nature.
How Fast Do Cats Grow?
One of the reasons we love cats is that there is such a range and variety. But, the downside is that answering the question of how fast kittens grow is much more difficult. In fact, the question of “how fast do kittens grow?” is one that we must answer on a breed-specific basis. In other words, if you have a Bengal kitten, the answer to this question will be different than if you have an American Shorthair kitten or a Maine Coon kitten.
And if you have a “mutt” kitten – a kitten whose parentage is unknown or only partially known, then good luck! Figuring out when is a kitten full grown becomes even more of a mystery!
A Kitten’s Growth Milestones
You can expect your kitten to experience the following general growth milestones, although the exact age can vary a bit from cat to cat.4
- 7 days: Their eyes are open, and their weight has doubled to eight ounces.
- 21 days: They weigh close to 15 ounces. They walk fairly steadily, and their teeth are coming in.
- 6 weeks: They clean themselves, and they stalk and pounce. At this point, they may weigh a little more than a pound.
- 8 weeks: Some may weigh enough to be neutered, and many can be adopted.
- 3–4 months: In this period, they may weigh around three pounds and get up to seven pounds.5 Their adult teeth start to come in (a process usually finished by six months).
- 4–9 months: They reach sexual maturity.
- 1 year +: They’re fully grown.
When Do Kittens Stop Growing?
There isn’t really any hard and fast scientific evidence to prove at what age do cats stop growing. Different feline breeds grow at different rates, and some breeds are quite petite at maturity. Others can be surprisingly robust in size and never seem to stop growing.
Most cat breeders agree that kittens stop growing somewhere between 8 and 16 months, depending upon the breed. That’s a pretty good rule of thumb for the vast majority of cats. However, it can be a bit more complicated than that. As we all know, cats are naturally contrary creatures and nothing is that simple!
What Age Does A Kitten Turn Into A Cat?
The kitten will have a full set of adult teeth by about 7 months old. At 5-6 months the kitten is old enough to be spayed or neutered. Kittens can start to look like adult cats by 6 months of age thus they need nutritional support for optimum health and development during their growth phase which lasts 12 months.
Do Neutered Cats Grow Bigger?
Do neutered cats grow bigger? A cat who is neutered as a young kitten will grow taller than its sibling who was neutered as a young adult. This is because puberty signals the body to stop growing. Without it, the growth plates in the long bones stay open longer.
How To Tell When A Cat Has Reached Its Full Size
While it is true that cats can continue to grow after the first year, their growth rate will slow down significantly afterwards. In fact, if you’re not paying strict attention, you might not even notice that they’re growing! The best way to understand when your cat has stopped growing is to measure and weigh it each month. Cats continue to gain height (ground to top of shoulder) as well as length. If you measure your kitty once per month, you’ll notice when those measurements stop changing.