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.

When Breeding Becomes Cruel: The Problem with Designer Cats

The cats and I are not happy with what we're seeing online.

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and Zazzles.

I saw something recently that made my blood boil. It was the emergence of a new ‘designer’ cat breed called the ‘Bully’ or ‘Dwelf’ Cat. Named for their elf-like features and genetic dwarfism, these pitiful creatures have the hairless mutation of the Sphynx, the limb deformity of the Munchkin Cat, and the turned up ears of the American Curl. I can’t fathom any reason why someone would deliberately set out to create such an unhealthy mix, apart from ignorance, cruelty, or greed.

Cruelty can take many different forms, and it’s not always as obvious as directly inflicting pain and suffering on an individual animal. Knowingly creating a cat that comes from two breeds with the most extreme feline appearances is irresponsible. And continuing to do so after being made aware of the health problems these cats will endure is cruel.

Most cat lovers out there will wholeheartedly agree with me on this, but there are obviously those who aren’t aware of the health problems and suffering these cats have in store. Many people trust breeders, sometimes more than they trust vets, and do not believe they would knowingly breed an unhealthy animal, and in some cases, that is true. However, much like the mentality behind animal poachers, if someone will buy them, someone will sell them.

Breeding and Mutation

Cyril
Cyril

Picture a cat. A simple (yet awesome) tabby cat like Cyril. If allowed to breed without any human intervention, most feline populations would eventually look a lot like him. His features represent the dominant genes, so it is a statistical certainty that over time, these genes will dominate.

Any variation from standard genetics is caused by a mutation, whether it be a lack of fur, extra toes, or an unusual coat color. When we don’t intervene, those mutations tend to get diluted back into the population, rarely, if ever, to be seen again.

What happens with selective breeding is that we see those variations, and mate those individuals with others that have the same or similar mutations, producing a population of cats with a high incidence of that trait. Unfortunately, when humans first started doing this, they didn’t necessarily realize that those physical features may be linked to other genetic abnormalities or defects, like heart disease, kidney problems, or bone deformities.

People didn’t know that pairing white fur with blue eyes often resulted in deafness, or that the mutation that gives the Scottish Fold their trademark ears also causes a cartilage defect that can be painful and debilitating. But we do now. Yet, we have worrying breed mixes like the Scottish Fold x Munchkin, and now, the Dwelf. And there is no doubt in my mind that the people who are breeding these cats are hoping like hell that people stay in the dark about their health.

Two Dwelf cats standing next to each other
Image Credit By: Pet Foto, Pexels

The Trouble With Dwelves

Although generally a fairly robust cat, the genes that give the Sphynx cat their hairless appearance have also given them a predisposition to skin problems, heart disease, hereditary myopathy (a neuromuscular disorder), and poor thermoregulation.

The short stature of the Munchkin Cat is the result of a genetic mutation that stops the bones from growing normally. This mutation is so severe that embryos that inherit two copies of the munchkin gene will die in the womb.

I appreciate that not everyone is going to have a firm grasp of genetics, but how can anyone think that combining two breeds with such obvious genetic mutations could possibly be a good idea?

I have seen the claims from Dwelf and Bully Cat breeders that their kittens are happy and healthy. They might be happy, but they are by definition, not healthy. A cat that is born with three legs or missing its eyes might be ‘happy’, but does that mean we should start deliberately breeding three-legged or no-eyed cats? Of course not. But if people will pay money for something, people will provide it.

Be An Advocate for Cats

This is where I ask for your help, because I am just one voice, desperate to show people the cruelty inherent in creating ‘designer’ breeds like the Dwelf, with no thought or appreciation for the consequences of their actions. Tell your family, tell your friends, tell your followers – these cats are being deliberately bred to have genetic defects, but if no one will buy them, the breeders will stop exploiting them.

Dr Karyn's paw print signature

This article is a part of Dr. Karyn's series with her five hilarious cats.

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

Can Cats Eat Vienna Sausages? Vet-Reviewed Facts & Safety Guide

There’s no question that cats love meat. These obligate carnivores have a way of suddenly appearing next to you whenever the slightest aroma...

Emotional Support Tigers? Give Me a Break!

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

How To Make An Outdoor Cat Into An Indoor Cat

There are many reasons why your outdoor cat is now transitioning to life as an indoor cat. Your kitty could be getting older...

Will a Heating Pad Help My Senior Cat’s Arthritis? Vet-Reviewed Facts & FAQs

Even if our dearest wish would be that our four-legged companions accompany us for as long as possible, the passage of time spares...

More related

10 Cat Breeds That Get Along Well With Dogs (Vet-Reviewed Info With Pictures)

Canines and felines are often perceived as incompatible pets that fight at every given opportunity, but modern pet owners know that some dogs...

Nutrisca Cat Food Review of 2025: Recalls, Pros & Cons

Review Summary Your cat food choice is one of the most important decisions you will need to make concerning your pet, but with...

10 Best Designer Cat Furniture Brands of 2025 – Reviews & Guide

You may have spent hours putting careful thought into designing the interior of your home, only to have a mass-produced piece of cat...

Top 10 Pet Trade Shows in North America (2025 Update)

Pet trade shows are a great place for pet companies to showcase their products and services, which also means they offer a great...

Keep reading

Why Is My Cat Meowing a Lot Suddenly? 6 Vet-Reviewed Reasons

Cats can be very vocal creatures! Sometimes, the reason why your cat is being so vocal is because they’re simply letting you know they need something, or perhaps they just like to hear themselves talk. A few breeds are anecdotally...

british-shorthair-cat-meowing

How Many Muscles Does a Cat Have in Each Ear? Vet-Reviewed Anatomy (With Infographic)

When it comes to dogs, we all know how good their senses are, especially for smelling and hearing. But in this regard, cats are similar to their canine counterparts and even have a few epic secrets of their own. A...

A man's hand scratches a fluffy cat behind the ear

Why Do Cats Thump Their Tails When Lying Down? 6 Vet-Verified Reasons

If you’ve ever owned a cat, you’ve probably noticed that they sometimes thump their tail while lying down. Usually, this is nothing to be concerned with, as cats do “wag” their tails while lying down for various reasons. However, you...

Cat wagging thumping tail in bed sunshine

Is Declawing Cats Illegal in the UK? Facts, Side Effects & Care Tips

Every cat lover is familiar with the chilling sound of little kitty nails being dragged across a piece of furniture. Sometimes, our cat’s attention is in the right place, like a scratching post, and other times, a beloved chair is...

cat nails with sharp claws in couch

Are Geraniums Poisonous to Cats? Vet-Verified Facts & Info

If you’re a cat lover who also loves plants, you already understand the importance of knowing which plants are toxic to your cat. Potted plants can be a lovely way to brighten up your home’s interior, but if you have...

Catster_Are Geraniums Poisonous to Cats

GMO in Cat Food: Vet-Reviewed Health & Nutrition Facts

GMOs or genetically modified organisms is a buzz phrase often used when describing human foods, but it has segued into the pet industry. We want the best for ourselves and, consequently, for our pets. However, GMOs often get a bad...

Hungry cat sitting in front of a emty food dish and looking up

Vetster Online Vet Appointments Review 2025: Our Expert’s Opinion

Telemedicine has become increasingly popular in the human healthcare world, and with good reason. By allowing you to speak to a doctor virtually, telemedicine appointments make getting care more convenient, accessible, and affordable. Telemedicine has the power to do the...

CAT_SAPR_Vetster Online Vet

How Long Do Devon Rex Cats Live? Average Lifespan Data & Facts

The Devon Rex cat is famous for their unique looks, marked by a triangular face, huge ears, and large eyes. But even more interesting than their appearance is their lovable personality. They are intelligent and playful and love being around...

red-devon-rex-cat-in-gray-background