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

Will CBD Help My Cat With Seizures & Epilepsy? What You Should Know (Vet-Reviewed)

Like humans, cats can be affected by seizures and epilepsy. During a seizure, your cat’s body will convulse uncontrollably. This causes the body...

Do Cats Need Sweaters & Do They Like Wearing Them? Vet-Approved Care Facts

Seeing a cat in a sweater may be an adorable sight, and you can find countless memes and photos of cats wearing sweaters...

The ASPCA’s Los Angeles Feline Foster Program

My husband and I have been fostering kittens for our local shelter for about five years, and we absolutely love it. The kittens...

8 Best Cat Cone Collars of 2025: Reviews & Top Picks

If your cat is licking a spot on their body to the point of baldness or they are recovering from surgery, you’ll need...

More related

Cancer vs Artificial Intelligence – Finally, an AI Product I Can Get Behind

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

Ragdoll Kittens for Sale in New Jersey: Breeders List 2025

Ragdolls are becoming quite the coveted cat breed, and for good reason! These fluffy, laid-back kitties melt in your arms when you hold...

Cat Art Show 2 Draws 7,000 People to a Los Angeles Gallery

On March 24 – March 27 2016 in Los Angeles, more than 7,000 people visited a gallery to see artwork featuring cats. Breathe...

PetFusion Ultimate Cat Scratcher Lounge (2025 Review)

When it comes to scratchers, your cat’s individual preference is the determining factor. Some cats are horizontal scratchers, while others prefer vertical scratchers....

Keep reading

Why Does My Cat Try to Bury Her Food? 3 Vet-Reviewed Reasons for This Behavior

Domestic cats sometimes act a little strange. Whether having a five-minute case of the zoomies or refusing to come out and meet your friend who popped by to say hi, it can be hard to predict what our cats will...

cat caching

6 Reasons Your Cat May Attack You & How to Fix It

Your normally happy cat is staring intently outside at something, tail completely straight and ears back. You wonder what is bothering them, so you walk over to your cat and they suddenly lash out at you! Even worse is when...

man playing with cat in bed_Anna Kraynova_shutterstock

How to Brush a Cat: 8 Vet-Verified Steps

Whether you’re trying to control shedding or looking for a way to bond with your cat, brushing is an essential part of caring for your pet. Some cats naturally love the activity, while others hide at the first sight of...

woman brushing the Persian cat

5 Potential Hairball Cat Food Side Effects: Vet-Reviewed Considerations & Tips

Most cats get hairballs. If you’re a cat parent, you know this is a fact you can’t get away from. Whether you have a long-haired cat or a short-haired cat, chances are your cat will experience hairballs at some point...

Yawning, choking, coughing Cat close up

When Will My Kitten Start to Purr? The Origin Story

The sound of a cat purring is one of the most relaxing and soothing noises you’ll ever hear. If you’re about to bring a new kitten home, you might wonder when they will start to purr so you can enjoy...

grey scottish fold kitten

How to Tell If Your Cat Is Having a Seizure: 3 Vet Reviewed Signs to Look For

If you’ve seen your cat drooling, thrashing around, or having difficulty controlling its movements, you might wonder if your feline friend has been having seizures. Watching anyone you love, human or feline, experience a medical emergency where they shake and...

russian blue lying down

My Cat Swallowed a Foreign Object: When to See a Vet

Cats love to play with anything that they can get their paws on, such as buttons, balls of paper, bits of string, threads, shoelaces, ribbons, cords, and yarn. Unfortunately, while playing with these seemingly harmless objects, our feline companions can...

a siamese cat getting examined by a vet at the clinic

Can Cats Eat Grits? Vet-Reviewed Health Risks & Advice

Whether it’s because we’ve decided to give them a treat or because they’ve gotten into it themselves, our cats can eat quite a bit of people food. And, a lot of the time, this is okay—so long as whatever they...

Can Cats Eat Grits