Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How Big Do Oriental Shorthair Cats Get? Size & Growth Chart

oriental shorthair cat relaxing together

The Oriental Shorthair cat is svelte and elegant, and just like their Siamese ancestors, they are athletic, lively, and intelligent. It’s easy to imagine these regal cats hanging out with Cleopatra, but they’re actually a relatively new breed. Their origin can be traced back to the 1950s, when English breeders crossed other house cats with Siamese cats. They then made their way to the United States in the 1970s, and it didn’t take long for them to make an impression.

Therefore, it’s understandable that you might not know much about this breed. So, what can you expect as your kitten grows into adulthood? For one thing, your Oriental Shorthair can get up to 8–12 lbs. Whether you’re here because you’re curious to learn more or if you’re thinking of getting one of these regal-looking cats, we have you covered!

divider cats oct 2024

Facts About Oriental Shorthair Cats

  • Like the Siamese, the Oriental Shorthair cat is chatty. They vocalize frequently and like to express themselves with their impressive vocabulary.
  • The Oriental Shorthair comes in a rainbow of 300 colors, so no matter what your favorite color is, you’re sure to find it. As a result, the Oriental Shorthair is known as the “rainbow cat.”
  • While there is no such thing as a truly hypoallergenic cat, the Oriental Shorthair comes very close. It produces a smaller amount of the Fel D1 protein, which people react to, so this cat is perfect if you have allergies.
oriental shorthair cat
Image Credit: Ambiento, Shutterstock

Oriental Shorthair Cats Size and Growth Chart

This chart shows the average rates of growth for an Oriental Shorthair cat. Of course, every kitten will grow at different rates, so don’t be worried if your cat doesn’t fit into these categories snuggly. If you have been keeping up with your veterinarian visits and they’re confident your kitten is happy and healthy, you are on the right track.

Age Weight Range Length Range
8 weeks 2–4 lbs. 7–9”
3 months 3–5 lbs. 8–10”
6 months 5–8 lbs. 10–12”
9 months 8–10 lbs. 12–14”
1 year 8–12 lbs. 16–18”
2 years 8–12 lbs. 16–18”

When Does an Oriental Shorthair Cat Stop Growing?

Oriental Shorthair cats generally stop growing around 12 months of age, but do they ever grow up? Even as an adult, this cat is fun and outgoing and unlike many other cats, will become withdrawn and depressed if left alone for longer than a few hours.

These cats are just fun to have around and never seem to grow out of that playful kitten stage. They are interactive and enjoy playing with other family members, whether that other member is a human, a cat, or even a dog. It’s generally recommended that you get another furry companion for your Oriental Shorthair cat.

Black oriental shorthair cat
Image Credit: Rita_Kochmarjova, Shutterstock

Factors Affecting the Size of Oriental Shorthair Cat

A few factors will affect the size of the Oriental Shorthair cat, like insufficient nutrition, genetics, not eating enough, breeding, too much exercise, and health issues.

There is a difference between having a small cat and an underweight one. If your cat is naturally smaller in weight and height, these characteristics will be proportionate. Conversely, a skinny Oriental Shorthair cat will be underweight for their age and height.1 Food refusal should be taken seriously because a lack of nutrition will negatively impact your cat’s development and growth.

Oriental Shorthair cats are prone to a few health issues, one of which is called protrusion of the cranial sternum,2 which can cause respiratory problems and make it difficult for the cat to breathe and eat. So, while your cat’s size difference might be down to something completely innocent, there are more worrying alternatives. If you ever feel concerned about your kitten’s development, contact your vet immediately.

Domestic cat - oriental shorthair_Jolanta Jd_shutterstock
Image Credit: Jolanta Jd, Shutterstock

Ideal Diet for Maintaining a Healthy Weight

If you start with high-quality kitten food for the first year of your Oriental Shorthair’s life before transitioning them to a high-quality adult diet, it will ensure that all of your cat’s nutritional needs are met. These are high-energy cats, so they will need a diet that can keep up with them. Oriental Shorthair cats like opportunities to explore and need to be mentally and physically stimulated to keep boredom and obesity at bay.

Cats cannot produce vitamins and amino acids like vitamins A, D3, B, arginine, and taurine. Therefore, you need to make sure these are included in their diet. Ask a veterinarian about the perfect nutritional composition of your cat’s diet.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

How to Measure Your Oriental Shorthair Cat

To measure your cat’s length accurately, you need to measure from their nose to the base of their tail, so you don’t include the whole tail. You will have to measure their height when they’re on all four paws and start from the floor to the base of their neck, so you don’t include their head in the measurement. You might need someone else to help you with this task, especially if you have a wiggler on your hands!

You are free to use this image but we do require you to link back to Catster.com for credit

divider cats oct 2024

Conclusion

Tracking the growth of a kitten can be tricky, especially one with as much energy as the Oriental Shorthair cat. Thankfully, once you tire this cat out, they’ll want cuddles, so there might be an opportunity to measure them after exercise. If your cat is not following the figures from the chart, it does not necessarily mean you have something to worry about. Keep up with your recommended vet visits, and make another appointment if you’re concerned.


Featured Image Credit By: VittoriaChe, Shutterstock

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Are Savannah Cats Legal in Georgia? Facts, Breed Traits & FAQ

If you love cats, there’s a good chance you’ve heard of the Savannah cat; it’s a cross between a Siamese cat and a...

Cat Ear Sores: Causes, Prevention Tips & Treatment (Vet Answer)

Cats can get sores or scabs on their ears from numerous different things. Sometimes it’s an injury to the ear, or potentially cancer....

Is It Ok to Put Ice Cubes in a Cat’s Water Bowl? Vet-Reviewed Pros & Cons

Most cat owners know that keeping a cat hydrated can sometimes be a challenge. Hydration is important for cats, and it’s even more...

Why Won’t My Cat’s UTI Go Away? 6 Possible Causes (Vet Answer)

Your cat urinated outside the litter box, so you took them to the veterinarian. Your vet diagnosed them with a urinary tract infection...

More related

Do Cats Get Winter Coats? Vet-Verified Fur Facts & Care Tips

The trees turning colors and the weather growing colder aren’t the only changes that happen during the fall months. Like many dogs, cats...

Can Cats Drink Sparkling Water? Nutritional Facts & Risks

If you own a cat, you always want to look after their health. After all, they are a member of the family! It...

Can Cats Eat Tortillas? Vet-Reviewed Diet Facts & FAQ

It’s Mexican night, and you’re in the kitchen fixing tacos when your cat brushes up against you and asks for a snack. You...

Ghost Stories Starring Cats: 6 Spooky Tails

Most people don’t find cats very scary. In fact, they find cats adorable, friendly, and fun. But that is not always the case....

Keep reading

Can Cats Eat Ketchup? Vet-Reviewed Diet Facts & FAQ

When considering what kind of human foods are okay to give to our cats, we’re usually thinking in terms of actual food and not condiments, such as mayonnaise or ketchup. However, there’s always a chance our feline friends could manage...

Can Cats Eat Ketchup

8 Common Litter Box Issues & How to Fix Them

It’s a common myth that cats always use their litter boxes without issue. For the most part, cats indeed learn to use a litter box rather quickly, but this doesn’t mean that you’ll never encounter problems with your cat going...

orange cat beside litter box

Can Two Male Cats Get Along? Interesting Facts & FAQ

Cats can be kept in pairs or groups in a multi-cat household. If you have one cat and are tempted to get another, it’s difficult to predict if your current cat will accept a new one. Felines are socially flexible,...

Can Two Male Cats Get Along

Why Does a Comb Make a Cat Gag? Vet-Reviewed Facts & FAQ

Maybe you have seen the videos online or experienced this yourself at home: you flick the teeth of a comb, and your cat gags. Why? Cats are far more sensitive to sounds than humans, and they can hear frequencies that...

a cat that feels sick and seems to vomit

Garlic Toxicity in Cats: Vet-Approved Signs, Care Tips & FAQ

Did you know that most bulbed plants are toxic to cats?1 Many of the flowers in your garden, including lilies, are toxic to pets. Your spice rack is also a danger zone for your curious kitty because of garlic and...

Cloves of garlic

My Old Cat Is Peeing Everywhere Suddenly: Vet Verified Causes & Care Tips

When your senior cat (or a cat of any age, for that matter) that is usually fastidious about using their litter box suddenly starts urinating all over your home, it can be worrying, to say the least. Cat pee is...

brown cat peeing

Why Does My Cat Keep Going to Their Litterbox (But Nothing Happens)? Vet Approved Advice

Over 37% of households in the United States have invited a cat into their homes; that is over 45 million households! About 63% keep their pets indoors exclusively. That’s a good thing, too, since it gives owners a heads-up if...

orange cat beside litter box

11 Best Cat Litters in 2025 – Reviews & Top Picks

Cats are truly some of the most unique domesticated animals and are exceptionally clean. They’re always grooming themselves, avoiding dirty situations as much as possible, and taking extraordinary measures to keep their waste out of sight. Despite their best efforts,...

Litter tray and scoop for cat on floor