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? Vet-Reviewed Size & Growth Chart

Share

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 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.”
  • The Oriental Shorthair is anecdotally reported as somewhat suitable for people suffering from cat allergies. Although production of dander as well as saliva, urine, and feces varies greatly between individual cats, as they have a fine short coat and no undercoat, Oriental cats may produce slightly less of the Fel D1 protein, an allergen to which people react; however, there is no scientific evidence to actually support this.
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 snugly. 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 12-18 months of age, but do they ever grow up? Even as an adult, this cat is fun and outgoing and never seems 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. Generally, when properly socialized and introduced, they enjoy having a companion in the form of another cat or a calm and well-trained dog.

Black oriental shorthair cat
Image Credit: Rita_Kochmarjova, Shutterstock

Factors Affecting the Size of the Oriental Shorthair Cat

A few factors may affect the size of the Oriental Shorthair cat, like nutrition, genetics, underlying health issues, breeding, inappropriate exercise, and others.

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. Food refusal should be taken seriously because a lack of nutrition will negatively impact your cat’s development and growth, and generally points to an underlying health issue.

Oriental Shorthair cats are prone to a few health issues, some of which are more breed-related while many are common in cats in general. 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, arginine, and taurine. Therefore, these will be included in their diet. The diet composition will also vary based on your cat’s age, health, spayed or neutered status, and activity levels. 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

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




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

Welcome to Coastal Cats & Critters

As much as we all love cats, we also know that in many parts of the country (and the world), the problem of...

Ask Dr. Paola – Help! My Cat Suddenly Has Dandruff! (March 30, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Your Cat Keeps Vomiting After Eating: Here’s What’s Going On

Cats vomit. It’s one of the less glamorous facts of life with a feline, and most cat owners have cleaned up more than...

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

Cat Stung by Bee or Wasp? Our Vet Explains What To Do

When the sun is shining and the birds are singing, there’s also a good chance that bees and wasps will be stinging. If...

8 Best Cat Beds in 2026 – Reviews & Top Picks

Cats take legendary naps. As crepuscular creatures, they’re likely to “cat nap” through most of the day and then become active around the...

8 Best Hanukkah Cat Gifts in 2026 – Reviews & Top Picks

The only thing better than spending a holiday with your feline companion is spending a holiday that lasts 8 days with your cat....

Ask Dr. Paola – Stress, Treats & Biting (October 20, 2025)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Keep reading

Can Cats Eat Cumin? Vet-Reviewed Facts & FAQ

If you’re fond of giving people food to your cat now and again, you’re likely always on the hunt to discover what’s safe to feed them and what isn’t. While some people foods are okay for your kitty to eat...

Can Cats Eat Cumin

Does Cinnamon Keep Cats Away? Vet Approved Facts & FAQ

Are you looking for a cat-friendly way to keep your four-footed companion off your new couch or away from your prized African violets? You may have read a few articles online suggesting that cinnamon works as an effective cat deterrent,...

close up cinnamon sticks

9 Best Diabetic Cat Foods in 2026: Reviews & Top Picks

A diabetes diagnosis can seem like a life sentence for your cat. However, the disorder can often be treated using a mixture of lifestyle changes and medications. Their diet plays a direct role in the cat’s blood sugar. When choosing...

Grey cat with yellow eyes up close

Why Do Cats Pounce? Feline Instinctive Behavior Explained (Vet-Reviewed)

Have you ever watched your cat bound around the house, seemingly jumping on random things? You may have wondered why they do it. The answer is simple: Cats love to pounce! But why? Cats pounce as an instinctive behavior and...

Cat hunting to toy mouse at home

Can Cats Drink Buttermilk? Vet-Approved Diet Facts & FAQ

Cats eagerly lapping up milk is a picture etched in most of our minds from old movies and children’s books. Milk used to be considered healthy for cats until we gained better knowledge and understanding of our beloved companions’ dietary...

Can Cats Drink Buttermilk

Can You Use Baby Shampoo on a Cat? Feline Shampoo Guide

Many cats don’t particularly enjoy being bathed, but sometimes it is necessary. Most cats never need shampooing, but if your cat has a skin condition that needs treating or has rolled in something that you need to clean off, you...

grey cat bath shampoo bubbles

Why Is My Cat Chasing Their Tail? 8 Vet-Approved Reasons

It’s normal to see a dog chasing their tail, but do cats chase their tails as well? While many kittens and adult cats chase their tails for entertainment (both for themselves and for you), sometimes this behavior can be indicative...

curled cat's tail close up

Does Diatomaceous Earth Kill Fleas on Cats? Vet-Reviewed Effectiveness & Safety

Diatomaceous earth—a powdery substance made from fossilized algae—is growing in popularity as a chemical-free pest control method. But is it safe for pets? While diatomaceous earth is effective at killing fleas and can be used as part of an integrative...

diatomaceous earth

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.