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.

Why Is My Cat Shedding All of a Sudden? 8 Vet-Reviewed Reasons

Persian cat and a pile of shedded cat hair

When it seems like your cat’s fur is coming out in clumps or you’re finding little fluffy tumbleweeds everywhere all of a sudden, it can be worrisome. In most cases, shedding is just part of being a cat. It’s a natural process—especially when the weather starts to get warmer—that helps them get rid of dead hair and grow new, healthy hair in its place.

That said, in some cases, shedding is caused by something abnormal, like a medical condition, poor diet, or stress. A check-up at the vet is advised if the shedding is combined with other signs. In this post, we’ll explore eight possible reasons why your cat may be shedding like crazy all of a sudden.

divider cat faces 2 oct 2024

The 8 Possible Reasons Your Cat Is Shedding All of a Sudden

1. It’s Shedding Season

Cats typically shed in spring and fall, and though it may seem like they’re losing a huge amount of fur, seasonal shedding is nothing to be concerned about. Shedding takes place in spring to thin out the winter coat and prepare your cat for the hot summer weather. Fall shedding helps get your cat ready to grow a new, thick winter coat.

You can give your cat (and your overworked vacuum) a helping hand in shedding season by brushing them regularly to loosen dead hairs and get rid of them faster.

If you are looking for recommendations on the best cat brush, you should check out Hepper Cat Brush. You will hardly find different brush with so many pros - easy to clean, easy to use, durable and effective. Simply everything you need from a cat brush. Click here to order yours today.

Hepper Deshedding Cat Brush
  • ONE PUSH RELEASE - This kitten brush / cat brush pops out fur with just a simple press, leaving you...
  • DURABLE - Cat shedding can be a tough ordeal. Made of resilient ABS plastic and metal bristles with...
  • COMFORTABLE - A cat fur brush with 60 degree angled, fine bristles and rubber stoppers will bring...

At Catster, we’ve admired Hepper for many years and decided to take a controlling ownership interest so that we could benefit from the outstanding designs of this cool cat company!


2. You’ve Got a Heavy-Shedding Breed

Though all cats shed to some extent, some breeds are heavier shedders. Ragdolls, Maine Coons, and American Bobtails make up a few of the heaviest-shedding cat breeds. Therefore, it’s not uncommon for these types of cats to shed even larger clumps of hair than other breeds.

hand holding shedded cat hair
Image Credit: Doucefleur, Shutterstock

3. Your Cat Is Stressed Out

Stress and anxiety can cause your cat to shed more than usual. In addition, stressed and anxious cats sometimes over groom as a way to soothe themselves, so if your cat is losing more hair than usual or you spot bald patches, this might be the cause.

Other signs of anxiety to watch out for are generally poor coat condition, odd bathroom habits like urinating outside the box, diarrhea, vomiting, hiding, or asking for more attention.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

Preventative wellness PGV mention keep cat healthy Preventative wellness PGV mention keep cat healthy mobile

4. Your Cat Has Allergies

white cat shedding
Image Credit: DreamBig, Shutterstock

Skin allergies are another reason why your cat might be shedding all of a sudden. Discomfort, itchiness, hair loss, scabbing, and sores are other giveaway signs of an allergic skin disease. Skin allergies can be caused by several things, including irritants inside or outside of the house, reacting badly to a certain type of food, and being allergic to or getting bitten by fleas.


5. Your Cat Is a Senior

Older cats can be a little more lax than they used to be when it comes to grooming themselves. In most cases, it’s because it’s more difficult for them to do so. This can result in a build-up of dead fur and matting if they’re not brushed regularly. Get your vet to give them a check-over in case there are signs of arthritis or dental problems.


6. Your Cat Has a Medical Condition

Certain medical conditions like hyperthyroidism and parasites can cause cats to lose a lot more hair than usual. Alopecia can be caused by a variety of factors, including overgrooming due to stress and skin conditions. Specific skin conditions that may exacerbate hair loss are scabies, ringworm, and feline eosinophilic granuloma complex.

There are a lot of medical conditions that have the potential to cause excessive hair loss, so always check with your vet if you suspect a health issue is at play.


7. Your Cat’s Diet Is Poor

American shorthair cat eating
Image Credit: Apicha Bas, Shutterstock

Poor nutrition is also a cause of excessive hair loss in cats. If your cat doesn’t eat a quality balanced and complete diet with all the nutrients they need to stay healthy, it can affect their coat and skin condition drastically. Certain nutritional deficiencies, such as zinc deficiency, can also cause hair loss.


8. Kittens Are on the Way

It’s not uncommon for pregnant cats to shed more due to hormone changes. This can also happen when they’re nursing or just after they’ve given birth. We recommend having a chat with your vet to find out how you can make sure your pregnant cat is eating the right foods to support healthy skin and coat.

divider cat paws oct 2024

Final Thoughts

To sum up, shedding is a natural occurrence in every cat, but some cats shed more than others for various reasons. Sometimes, it is down to their breed and having an undercoat to shed, whereas in other cases, a health condition, like allergies, alopecia, or a skin infection, may be causing hair loss.

If your cat is shedding to the point where it’s starting to worry you or you’ve noticed bald patches or excessive grooming of late, talk to your vet to make sure your cat isn’t suffering from anxiety or another health issue.


Featured Image Credit: DreamBig, 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

My Cat’s Fur is Changing Color: 6 Vet Approved Reasons for Coat Changes

Going gray as you age is a fact of life, and we either accept it or do something about it. Sometimes, we also...

Are Feral Cats Bad for the Environment? Vet-Reviewed Pros, Cons & Facts

Despite their small size, cats can be quite resilient and capable survivalists. The unowned cat population is quite large, with an estimate of...

Why Do Cats Run Away? 10 Common Reasons for This Behavior

When your cat runs away from home, it can be heartbreaking. You think you are giving your cat all they could need or...

Weruva Patés Cat Food Review (2026 Update)

Review Summary You may be familiar with Weruva, as it’s a brand that’s been around since 2006, but you might not be as...

More related

Will My Kitten Be Short or Longhaired? Genetics & Physical Traits Explained

If you bring home a kitten from a rescue shelter, it can be challenging to determine the kitten’s exact lineage, and you may...

Why Do Cats Love Shoes? 3 Vet-Approved Reasons for This Behavior

If you’ve felt like you’ve observed your cats having a strange obsession with your shoes, it might not just be in your head....

Can You Shave a Cat With Human Clippers? Facts to Consider & Tips

Sometimes a cat might need shaving. While this is pretty rare, you might find yourself needing to clip your cat’s coat for a...

Acupuncture for Asthma in Cats: Pros, Cons & Effectiveness (Vet Answer)

Feline asthma is a relatively common condition, one that is possibly more common than we realize. There are some breeds, such as the...

Keep reading

What Essential Oils Do Cats Hate – The 7 Worst Options (Vet Reviewed)

It’s generally recommended for cat owners to keep their cats away from essential oils. Essential oils can be extremely harmful to cats because they contain very high concentrations of chemicals that are toxic to them. Most cats aren’t fans of...

black and silver portable speaker beside green leaves

Can Cats Eat Flies? Vet-Reviewed Facts & Health Guidelines

If you’ve ever seen a cat pounce on a fly and eat it, you may be wondering if this is safe or potentially harmful for your furry friend. So can cats eat flies? Thankfully, flies aren’t toxic or poisonous, and...

Cat hunting a fly

How Many Teeth Does a Cat Have? Vet-Approved Facts & Infographic

If you’ve ever watched your cat eat or peered into their mouth, you’ll have noticed their impressive pearly white teeth. Cats have roughly as many teeth as us humans, with kittens sporting 26 deciduous (baby teeth) and adult cats boasting...

Cat-meowing

What’s the Price of Cat Urinary Treatment? 2026 Costs

Urinary conditions are a major concern for cat parents. The umbrella term that includes several bladder and urethral conditions in cats is “feline lower urinary tract disease” (FLUTD). Feline lower urinary tract disease can be caused by a variety of...

vet holding sick cat

Why Do Cats Love Shoes? 3 Vet-Approved Reasons for This Behavior

If you’ve felt like you’ve observed your cats having a strange obsession with your shoes, it might not just be in your head. The reality is, that many cat owners have noticed this same behavior. Since it’s happening with cats...

British Short-hair Cat beside shoes

Why Do Cats Twitch in Their Sleep? 3 Vet Reviewed Reasons

Just like people and other animals, you may notice that your feline sometimes twitches in their sleep. As you might guess, this is pretty normal behavior. Lots of cats twitch in their sleep, though some are more prone to this...

Fat Calico Cat Lying or sleeping on a Perch in the Window sunbathing

What to Feed a Diabetic Cat to Gain Weight: Vet-Reviewed Health Tips

Diabetes has become an epidemic, not just in people but also in pets. Feline diabetes is most similar to type 2 diabetes in humans, meaning that weight management and diet are critical factors in controlling the condition. Cats with diabetes...

cat thin

How to Calm a Cat During Thunderstorms: 16 Vet-Reviewed Methods

Some cats could care less about thunderstorms, while others are scared and anxious. If your cat doesn’t feel comfortable around loud and unpredictable noises, they may hide or even try to escape your home as the storm begins, which could...

cat scared of thunder

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.