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Home / Breed / Kefir The Giant Maine Coon Cat From Russia: Size, Weight And Story

Kefir The Giant Maine Coon Cat From Russia: Size, Weight And Story

ByKatrina Stewardson Posted on19/07/202520/04/2026 Last Updated20/04/2026
White Maine Coon Cat Guide

Kefir is one of the most talked-about Maine Coon cats on the internet, and it is easy to see why. This giant white cat from Russia became famous after photos and videos showed just how enormous he looked compared with the people and furniture around him.

What made the story spread even faster was that Kefir was not just big for a cat. According to the article, he weighed around 12.5 kg (27.5 lb) at 1 year 10 months, which is already well above the usual male Maine Coon range.

But Kefir is not only famous for his size. He is also known for his calm, affectionate personality, soft vocal style, and dog-like presence around the home.

This guide explains how big Kefir really is, why some people doubt the photos, what his owner says about his temperament, and what his story reveals about Maine Coon growth, care, and genetics.

Quick Answer

Kefir is a giant white Maine Coon cat from Stary Oskol, Russia, who became famous because of his extraordinary size and gentle personality.

He weighed 12.5 kg (27.5 lb) at 1 year 10 months, which is well above the typical male Maine Coon range of 8.2 to 10 kg, and explains that he may still have continued growing because Maine Coons often mature slowly until 3 to 5 years of age.

Still Growing After Two Years

Maine Coons are notoriously slow growers, only reaching full size by 3-5 years of age.

Yet, even before his second birthday, Kefir far exceeded breed averages. At 12.5 kg, he surpassed the top end of male Maine Coon weight, transforming from an adorably skinny kitten into a mountainous companion in under two years!

Experts expect he may continue gaining size into his third year, making him a contender for world-record proportions.

From Siberian Cottage To Social Stardom

Purchased during the 2020 lockdown after browsing cattery ads, Kefir was the only white kitten in the litter.

Initially unimpressed by his appearance as a kitten, his owner, Yulia Minina, was stunned as he grew into a fluffy, snow-white feline.

Despite limited space in their 2-bedroom apartment, Kefir’s energy and curiosity shone through. He delighted in parkour-style window-sill jumps and knocking over flowerpots until his family moved into a larger house.

His transformation from quiet kitten to social media star happened when Yulia shared a few photos on her Instagram @yuliyamnn, and the internet watched in awe as the whiskered giant unfolded.

Across platforms, including Russia Beyond, The Independent, Metro, and the Mirror, media outlets applauded Kefir’s size and spirit

Personality: Gentle Giant

Though his size impresses, it’s Kefir’s character that truly captivates. Yulia describes him as “very modest and affectionate,” more akin to a human companion than a typical cat.

He eagerly seeks human company, climbs onto his owner’s chest to nap (even though he’s too heavy these days), and enjoys joining the family at the dinner table from “his own chair”.

When strangers arrive, they often mistake him for a dog, but with familiarity, he welcomes attention and strokes with calm grace.

Despite his vast size, he vocalizes softly and seems sensitive to loud sounds or chaos, always favouring peaceful conditions at home.

Social Media & Community

  • Instagram: @yuliyamnn features daily posts and stories of Kefir lounging, walking, and interacting with his family. He’s amassed tens of thousands of followers drawn to his unique scale and sweet temperament.
  • TikTok: Videos show Kefir standing on hind legs to open doors like a toddler, climbing stairs, and enjoying walks on a leash, often drawing comments like “He eats better than my kid” and “That cat is better than half the dogs out there.”

Daily Care: Diet, Grooming & Lifestyle

Kefir’s size demands thoughtful care. He refuses dry food and thrives on a raw or fresh meat-based diet, typically chicken or fish, and abundant wet food to support his muscular build and plush coat.

This choice, Yulia reports, fuels his steady growth and shiny fur.

His yearly growth and coat require consistent grooming:

  • Regular brushing to prevent mats
  • Nutritional meals
  • Space to stretch and climb
  • Mental stimulation through interactive play and leash walks

Authentic Size Vs. Camera Tricks

Online skeptics have suggested camera tricks or forced perspective exaggerate Kefir’s size.

Reddit users and commentators note odd angles in photos, yet those familiar with Maine Coons insist that even adjusted for lens distortion, he is undeniably massive.

Despite some disbelief, live videos, third‑party media, and Yulia’s consistent documentation confirm that Kefir is real, and exceptionally large, regardless of photographic technique.

Here is a short YouTube video of Kefir the Maine Coon cat in person. Credit for the video goes to the Daily Mail YouTube channel:

Kefir the Maine Coon Cat
YouTube Video: Kefir the Maine Coon Cat

Final Thoughts

Kefir is famous because he has all the features people find most impressive in a Maine Coon at the same time. He is exceptionally large, has a striking all-white coat, and is described as having the calm, gentle, almost dog-like presence that makes this breed so popular online.

That combination makes him stand out far more than an ordinary big cat.

His size is unusual, but he is still better understood as an extreme example of what a Maine Coon can become rather than something completely outside the breed.

Maine Coons are known for growing slowly and taking years to fully mature, so very large males can keep developing for longer than many other cats. That helps explain why Kefir attracted so much attention while still relatively young.

What really keeps people interested is that Kefir matches the fantasy image many people have of a Maine Coon before they own one. He looks enormous, fluffy, affectionate, and almost unreal in photos, which makes him highly shareable. His popularity is not just about being big, but about representing the most dramatic and eye-catching version of the breed.

FAQs

Who is Kefir the Maine Coon?

Kefir is a white Maine Coon cat from Stary Oskol, Russia, who became famous online because of his enormous size and calm personality.

How much does Kefir weigh?

Kefir weighed 12.5 kg (27.5 lb) at 1 year, 10 months.

Is Kefir bigger than a normal Maine Coon?

Yes. His weight is above the typical male Maine Coon range of 8.2 to 10 kg.

Is Kefir still growing?

Possibly. Maine Coons can continue growing until 3 to 5 years old, so exceptionally large cats may keep filling out after age two.

Why do people think Kefir is a dog?

People often mistake Kefir for a dog because he is so large, fluffy, and calm around strangers.

Is Kefir’s size real?

Yes, although some people online have suggested that camera angles make him look bigger. Live videos, third-party media coverage, and consistent photos from his owner support that he is genuinely very large.

What does Kefir eat?

Kefir refuses dry food and mainly eats a raw or fresh meat-based diet, including chicken or fish, plus wet food.

What is Kefir’s personality like?

Kefir is described as gentle, modest, affectionate, and very people-oriented. He also vocalizes softly and prefers a peaceful home environment.

Why did Kefir become famous?

He became famous because his owner shared photos and videos online showing his huge size, white coat, and relaxed temperament.

What does Kefir’s story tell us about Maine Coons?

Kefir shows how large some Maine Coons can become, but also highlights that giant size comes with extra care needs, including grooming, diet, space, and enrichment.

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  • Breed Basics
    • What Is a Maine Coon? A Complete Beginner’s Guide To The Breed
    • Maine Coon Size & Growth: Height, Weight, Length & Development Stages
    • Maine Coon Personality: Temperament & Behavior Traits
    • Maine Coon Coat, Color & Pattern Guide
    • Maine Coon Coat Type & Texture Guide
  • Maine Coon Care
    • Maine Coon Grooming Guide: Coat Care, Bathing, Nails & More
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