Why cats knock things over is one of the great mysteries of cat ownership — and one that every feline parent eventually faces. You’re sipping your tea, minding your business, when your cat locks eyes with you, raises a paw, and slowly pushes your mug off the table. But are they bored, curious, or secretly testing gravity? Let’s unpack the truth behind this mischievous behaviour (and how to stop it before your next cup hits the floor).
🐱Why Do Cats Knock Things Over?
Cats aren’t just being naughty — they’re following instincts or trying to get your attention.
🐾Curiosity Is Their Superpower
One of the biggest reasons why cats knock things over is pure curiosity. They use their paws the same way we use our hands — to test, tap, and investigate the world around them. That wobbly pen or half-full glass is basically an invitation to experiment!
For cats, knocking things over isn’t mischief — it’s science.
Whiskernest Tip: Provide safe outlets for curiosity. Puzzle toys, feather wands, or treat balls give them something to “test” without turning your desk into a demolition zone.
😼Attention, Please!
Sometimes, cats knock things over simply because it gets your attention — fast. If you respond every time, your cat learns that chaos = conversation. To them, a clatter on the floor means “Success! The human noticed me!”
Whiskernest Tip: Give your cat positive attention before they resort to mug-murder. A quick play session, cuddle, or snack can stop the drama before it starts.
🧠Instincts and Hunting Practice
Another reason why cats knock things over is that they’re practicing their natural hunting skills. Tapping, swatting, and chasing are natural feline instincts. Your cat might not be hunting mice, but that rolling pen or dangling keychain makes a purrfect “prey substitute.”
Whiskernest Tip: Offer toys that move unpredictably — like wiggling teasers or battery-powered mice. Satisfying that inner hunter reduces their urge to “hunt” your household objects.
💤Boredom or Excess Energy
A bored cat is a creative cat — and not always in ways you’ll appreciate. If your cat isn’t getting enough stimulation, they’ll find their own entertainment… and your shelf decor becomes the victim.
Whiskernest Tip: Schedule two short play sessions a day (morning and evening). Cats thrive on routine, and regular play burns off that extra “I must push this now” energy.
In my own home, Snowflake has turned this into a sport. One night he dragged the entire toy basket to the top of the stairs and sent every single ping pong ball bouncing and clattering onto the wooden floor at 2 a.m. It wasn’t spite — it was pure playfulness (and maybe a little attention-seeking). Needless to say, the toy basket has been moved far away from the stairs!

🛋️How to Stop Cats from Knocking Things Over
Now that you know why cats knock things over, here’s how to keep your belongings intact:
- Secure tempting objects: Keep fragile items away from edges.
- Use deterrents wisely: Double-sided tape or citrus-scented sprays can make surfaces less appealing.
- Add vertical space: Cat trees or shelves give them high perches that are safe for exploration.
- Reward calm behaviour: When your cat ignores that shiny pen, offer praise or a treat.
Consistency and patience are key — remember, they’re not trying to annoy you (well, mostly).
🐱 Final Whisker Wisdom
So, why do cats knock things over? Because they’re curious, playful, intelligent — and yes, occasionally dramatic. Understanding their behaviour helps you redirect it in ways that make both of you happy.
Next time your cat sends something flying, take a deep breath, smile, and remind yourself: you’re living with a tiny, fluffy scientist conducting daily gravity experiments. 🧪🐾
🐾 About the Author

Denise Shafto – Cat enthusiast & founder of Whiskernest
Denise shares cozy tips, practical guides, and cat-approved finds to help whiskered friends live their best nine lives. When she’s not writing, she’s usually testing new toys with her own mischievous felines.
🐾 WhiskerNest Cat Picks
Our favorite finds for happy, healthy cats — chosen by Snowflake & Twilight! 😺
