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.

6 Strange Items Cats Like to Collect & Why (Vet-Reviewed Info)

Cat-hunting-to-toy-mouse-at-home

Cats are interesting animals that often do things that remain a mystery to us. One behavior that some cats engage in is collecting random items. There’s yet to be a concrete explanation for why cats will collect, hide, or hoard certain items. This behavior may be connected to resource guarding, mothering instincts, or hunting instincts.

While it makes sense for cats to hoard and hide food and toys, some cats may develop a hobby of collecting unusual items. Here are some things that cats may end up collecting.

divider 2 cats

Top 6 Strange Things Cats Collect

A Note From Our Veterinarian

Please note that the reasons provided for a cat collecting these items are not scientifically proven. Instead, they are the author’s opinion. Your cat may collect these or other items for different reasons. 

Small items pose a choking and foreign body risk for cats. Whenever possible, you shouldn’t allow your cat to freely collect small items.

1. Jewelry

a cat looking at the wedding rings_JumpStory
Image by: Jumpstory

Some cats may end up stealing and hoarding jewelry. It’s unclear as to why cats may enjoy jewelry, especially because they’re not fond of wearing any. However, it’s possible that they’re attracted to the shine and light reflecting off them. Jewelry and precious metals may have similar effects to laser pointers and light that reflects off mirrors. So, cats may just be intrigued and attracted to items that sparkle.


2. Bottle Caps

blue and white bottlecaps
Image by: Sebastian P, Unsplash

Metal bottle caps can have a similar effect as jewelry. Some cats enjoy playing with plastic bottle caps that you can twist off of milk cartons and water bottles. Cats might like these items because they enjoy the sounds that they make. They make different noises when they’re dropped or slid across the floor. These sounds may sound similar to insects that cats may enjoy hunting, like cicadas and crickets.

I’ve had a cat that enjoyed stealing milk caps. We’d have to be very careful with holding them in our hands whenever we opened a milk carton, or she’d swipe them off our kitchen counter. She seemed to enjoy batting the caps and sliding them around the floor. She especially loved when the cap had a tail attached to it, and she could spend a long time playing with it.


3. Rubber Bands

rubber bands
Image by: Jumpstory

Cats may enjoy stealing rubber bands because of their texture. Like jewelry and bottle caps, rubber bands can be choking hazards. Therefore, it’s best to store them away in safe and unreachable places to keep your cat safe.


4. Cardboard Boxes

a cat in a cardboard box
Image by: Jumpstory

Cardboard boxes may not be very valuable to us, but many cats enjoy playing with cardboard boxes and hiding in them. My cat loves cardboard boxes, and you can see her getting visibly upset on garbage collection day. When it’s time to toss our boxes in the recycle bin, we always have to remember to leave one box for her.

Cats can find cardboard boxes comforting because they find safety in enclosed and dim spaces. They may also enjoy scratching them and sinking their claws into them.


5. Leaves and Paper

crumpled paper
Image by: Jumpstory

Some cats might enjoy collecting pieces of paper. You might find them playing with crumpled receipts and opened mail. Some cats might also like playing with and collecting dried leaves. The reason for this may be similar to the reason why cats like bottle caps. The leaves and paper can make noises that might be intriguing for cats.


6. Small Pieces of Plastic

marker pen caps
Image by: Teacher Photo, Shutterstock

Cats may develop a habit of collecting everyday household items, like floss picks, jar lids, and pen caps. They may enjoy playing with small pieces of plastic because they have a softer texture and can make some fun noises. For such cats, plastic items are relatively light and easy to carry around, and they’re usually found in abundance.

divider 2 cats

Is It Okay if My Cat Collects Things?

Collecting items is normal behavior that some cats will engage in, and it’s not a huge concern. However, there are some cases when it should be addressed and prevented. Some cats may collect things due to resource guarding.

Resource guarding is more common in multi-cat or multi-pet households. It occurs when one cat feels as though their resources are threatened. Consequently, they begin hoarding the sources. They are often seen getting aggressive when others come near their resources. 

Resource guarding doesn’t necessarily have to be for items a cat can carry. Sometimes, a cat will defend their litter box from others. Likewise, they may consider a resting spot as “theirs” and not allow others to access it. 

Some cats may collect items that are safety hazards. Cats can easily choke on small items, like coins and rubber bands. If they accidentally eat a non-food item, they’ll need to be assessed by a veterinarian promptly. This may involve surgery to remove the foreign body from their system. Strings, rope, or thread-like objects are the most common foreign body seen in cats. You can try to find safer alternatives and cat toys that are similar to these items, and make sure to store these objects in secured spaces.

If you are concerned about the health and well-being of your pet, seek veterinary advice for the best course of action.

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!

PangoVet_Mention-in-Content for PangoVet2 save money

divider 2 cats

Conclusion

One of my favorite things about having pet cats is discovering their unique and quirky habits and personalities. Not all my cats collected objects, and the one that liked to swipe milk caps was completely healthy and was most likely acting out of curiosity and playfulness. Cats collecting random objects isn’t usually a problem (provided they don’t choke on or inadvertently swallow the item), but if you’re concerned, you can always speak with a veterinarian or a cat behaviorist to determine the best way to address the behavior.


Featured Image Credit: Viacheslav Lopatin, 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

Dr. Elsey’s Cat Food Clean Protein Review 2025: Recalls, Pros & Cons

Review Summary In 1987, Dr. Elsey and his wife Kathy founded the Dr. Elsey company. The entire idea was to extend help to...

Cyril ❤️ Alex: A Valentine’s Day Love Story

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

Toybob Cat Breed: Info, Pictures, Temperament & More

Kittens are so adorable that many cat owners wish their pets would stay kittens forever. If that sounds like something you’ve wished for...

Fostering Shelter Cats: Our Vet Shares 10 Tips Before You Bring One Home

Roughly 66% of American households have a pet, with cats ranking second among the most popular animals. Shelters have come a long way...

More related

How Much Does a US Pet Passport Cost? (2025 Update)

Many pet owners view their pets as family members, and more pets accompany their families on their travels than ever before. Obtaining a...

Is Japanese Cat Wine a Real Thing? Surprising Facts & Health Considerations

Most of us consider our cats best friends, but who would imagine they could be drinking buddies? A few years ago, that idea...

Why Is My Cat’s Tail So Long? Our Vet Explains Tail Genetics, Function & FAQ

If you’ve ever looked at your cat’s tail and wondered why it’s as long as it is, you’re not alone. Cat tails are...

Cat Chin Mites vs. Chin Acne: How To Tell The Difference (Vet Answer)

Lots of strange things can happen with cat chins. For instance, who knew cats can get acne, just like people? They can! And...

Keep reading

How to Give a Cat a Bath (Without Getting Scratched): Expert Tips & Tricks

If you have owned a lot of cats, you know how much they hate water. If you are a new pet owner, you are likely in for a big surprise when you attempt to give your cat their first bath....

Clutch being his usual calm self in the bath

Why Your Cat Is Hiding Under the Bed: 9 Vet-Reviewed Reasons & Tips

Cats are interesting creatures. They can be crabby, interactive, standoffish, or comical. It can be challenging to decipher why a cat does what they do, especially regarding things like hiding under the bed. So, why would your cat hide under...

cat hiding under the bed

Can Cats Eat Baby Food? Vet-Reviewed Facts & FAQ

Your cat is your baby. But if you recently brought a human bundle of joy home, you may be tempted to share some nutritious baby food with your feline friend. Can your cat safely consume baby food? It depends. While...

Can Cats Eat Baby Food

10 Do’s & Don’ts of Confining a Cat to a Room at Night (Vet-Reviewed)

There are several reasons why you might want to limit your cat’s space at night, from preventing certain behaviors to protecting your cat. But sectioning them off from the rest of the house can be a challenge. After all, you...

cat near door at home

How Often Will a Feral Cat Move Her Kittens? Vet Approved Facts & FAQ

You may have seen your domestic mama cat move her kittens more than once, and the same behavior is common for feral mother cats. Feral cats will move their kittens for various reasons. If the mother cat is unsatisfied with...

kittens in the grass with their mother

Can a Blood Test Show Cancer in Cats? Vet-Reviewed Facts & FAQ

As with humans, cancer is a leading killer of cats. Though the disease can be difficult to detect in felines, researchers are now developing blood tests that could help veterinarians diagnose cancer in cats earlier and more accurately. The hope...

Hand holding blood work samples in test tubes

Is Celosia Toxic to Cats? Vet-Approved Facts & Safety Guide

Celosia argentea var. plumosa is a plant that is commonly used as an ornamental flower. It is a part of the amaranth family, and while it is native to Asia, it can now be found in many parts of the...

Catster_Is Celosia Toxic to Cats

How Long Can You Leave Wet Cat Food Out? Vet-Verified Health & Safety Info

The clock starts ticking as soon as you open your cat’s can of food. Feline wet food will grow bacteria, accumulate bacterial toxins, and spoil much faster than dry food. Generally, wet cat food can only stay out for around...

cat eating wet tuna food