The Biggest Domestic Cat Breeds And What To Know Before Adopting

Nov 2, 2025byMichael Tremblay

Some cats aren’t content to curl up in small spaces, they take up the whole sofa. The largest domestic cat breeds combine impressive size with gentle personalities, making them affectionate giants in the feline world.

These cats often weigh twice as much as the average kitty and need a little extra space, care, and grooming. Before you bring one home, it’s worth understanding what life with a big cat really involves.

This article is for general information only and should not replace professional veterinary advice. Each cat’s temperament, health, and size may vary. Always consult a vet or reputable breeder before adopting.

1. Maine Coon

Maine Coon
Image Credit: © Anastasia Prideina / Pexels

Males can tip the scales at 18 pounds or more, making this breed a true heavyweight champion. Their shaggy coats and bushy tails give them an almost wild appearance, yet they are surprisingly sociable.

These cats love being around their families and often follow you from room to room. They adapt well to households with children and other pets, making them versatile companions.

Regular brushing keeps their long fur from matting, and they need plenty of space to stretch and play. Their playful spirit lasts well into adulthood, so interactive toys are essential.

2. Ragdoll

Ragdoll
Image Credit: © 大 董 / Pexels

With a heart as tender as their silky fur, Ragdolls earn their name by going limp when picked up. Males often reach 20 pounds, and their calm demeanour makes them ideal lap cats.

They thrive on human interaction and may become lonely if left alone too long. Their semi-long coats require weekly grooming to prevent tangles.

Ragdolls are indoor cats by nature, lacking the street smarts of more independent breeds. They bond deeply with their families and often greet you at the door like a loyal pup.

3. Savannah

Savannah
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Bred from African servals, these cats carry an exotic look with spotted coats and tall, lean bodies. Some males weigh up to 25 pounds, and their energy levels rival those of a Border Collie.

They love to jump, climb, and explore every corner of your home. Training them to walk on a leash is possible, and many enjoy water play.

Savannahs need mental stimulation and physical activity daily, or they may become destructive. Check local laws before adopting, as some areas restrict ownership due to their wild ancestry.

4. Norwegian Forest Cat

Norwegian Forest Cat
Image Credit: © Zeynep Sude Emek / Pexels

Built for harsh Scandinavian winters, this breed sports a waterproof double coat and powerful legs. Males commonly reach 16 pounds, and their muscular frames help them climb with ease.

They enjoy perching on high surfaces and observing their surroundings from above. Despite their rugged appearance, they form strong bonds with their families.

Their thick fur sheds seasonally and requires consistent grooming during those periods. Norwegian Forest Cats appreciate having outdoor access but adapt well to indoor living with proper enrichment.

5. British Shorthair

British Shorthair
Image Credit: © M e r v e / Pexels

Round faces and chubby cheeks give these cats an adorable teddy bear quality. Males often weigh between 12 and 18 pounds, with a solid, compact build.

They have an easygoing personality and tolerate being alone better than many breeds. British Shorthairs are not overly demanding of attention but enjoy quiet companionship.

Their plush coats need minimal grooming, though weekly brushing helps reduce shedding. They mature slowly, taking up to five years to reach full size, so patience is key during their extended kittenhood.

6. Siberian

Siberian
Image Credit: © Diogo Miranda / Pexels

Hailing from Russia’s frozen forests, Siberians boast a triple-layered coat that keeps them warm in extreme cold. Males typically weigh 15 to 20 pounds and possess impressive agility despite their size.

Many allergy sufferers find relief with this breed, as they produce lower levels of the Fel d 1 protein. Their playful nature continues throughout their lives, and they love interactive games.

Siberians form deep connections with their families and often display dog-like loyalty. Their coats require regular grooming, especially during seasonal shedding periods.

7. Ragamuffin

Ragamuffin
Image Credit: © Viktorya Sergeeva 🫂 / Pexels

Patience defines this breed, as they adore being handled and cuddled by people of all ages. Males can weigh up to 20 pounds, and their plush coats come in nearly every colour imaginable.

They take up to four years to reach full maturity, remaining kitten-like in behaviour longer than most breeds. Ragamuffins are exceptionally trusting, which means they must stay indoors for safety.

Their docile temperament makes them wonderful therapy cats. Weekly brushing keeps their medium-long fur in good condition, and they rarely protest grooming sessions.

8. Turkish Van

Turkish Van
Image Credit: © omerovic cetinkaya / Pexels

Nicknamed the swimming cat, this breed has a natural affinity for water and may join you in the shower. Males often reach 16 pounds, with strong, muscular bodies built for activity.

Their semi-long coats lack an undercoat, making grooming easier than other long-haired breeds. Turkish Vans are highly intelligent and can learn tricks or solve puzzle toys.

They bond closely with one or two family members and can be reserved with strangers. Providing climbing structures and play opportunities helps channel their abundant energy constructively.

Michael Tremblay
byMichael Tremblay

A nature enthusiast from Montreal with a background in wildlife photography. Michael writes about wildlife, conservation efforts, and the beauty of animals in their natural habitats.