You bring home a new toy, your dog lights up with excitement, carries it around proudly, squeaks it endlessly... and then two days later, it's sitting untouched in a corner.

Sound familiar?

It might seem like your dog is simply "picky," but science tells a different story. Dogs don't usually stop playing because the toy is bad—they stop because their brains have adapted to it.

It's Called Habituation

One of the biggest reasons dogs lose interest in toys is a behavioural process known as habituation. Habituation occurs when an animal becomes less responsive to something after repeated exposure. The first few encounters with a new toy activate curiosity because it's unfamiliar. As the toy becomes predictable, the excitement naturally fades.

This isn't stubbornness or ingratitude—it's actually a normal survival mechanism. In the wild, paying attention to every familiar object would waste energy. Instead, dogs are naturally wired to notice what's new and potentially important.

Dogs Are Programmed to Seek Novelty

Researchers studying canine play have consistently found what's known as the novelty effect. When dogs are given a choice between a familiar toy and a new one, they overwhelmingly choose the unfamiliar option—even if the toys are otherwise very similar.

Interestingly, it isn't always the toy itself that matters. A different scent, texture, sound, or even simply not having seen the toy for a while can make it feel "new" again.

This is why your dog might ignore a basket full of toys but become fascinated with a cardboard box or a forgotten tennis ball rediscovered under the sofa.

The Best Toy Isn't Always the Newest

Studies on environmental enrichment show that engagement lasts longer when toys satisfy natural canine behaviours such as chewing, sniffing, foraging, and problem-solving, rather than simply being objects to carry around. Food-dispensing toys, chew toys, and scent-based enrichment often hold attention longer because they tap into instincts that dogs evolved to perform every day.

Recent research has even shown that individually preferred scents can increase play and activity, although dogs will eventually habituate to these as well. This suggests that variety—not constant replacement—is the key to keeping enrichment effective.

Why Playing Together Matters

For dogs, toys are only one part of the experience.

Dogs are highly social animals, and research suggests that many toys become significantly more rewarding when they're part of an interaction with their favourite person. A simple game of tug, fetch, or gentle play can transform an ordinary toy into something exciting again.

Sometimes your presence is more valuable than the toy itself.

Keeping Toys Interesting

The good news is that you don't need to keep buying new toys every week.

Instead, try rotating them. Leave only a few toys available at a time, and store the rest away for a week or two. When they return, they'll often feel novel again. You can also introduce different textures, safe scents, or interactive games to refresh familiar favourites.

Think of toys the way you think of books. Even your favourite story becomes less exciting if you read it every single day—but after some time away, it's enjoyable all over again.

At the end of the day, dogs don't crave endless possessions. They crave experiences that engage their senses, challenge their minds, and strengthen their bond with us.

The best toy isn't necessarily the most expensive one. It's the one that lets your dog do what dogs were always meant to do: sniff, chew, explore, solve and play.

A Little More About the Dog You Love

Books to read and films to watch if you want to understand dogs better

Living with a dog teaches you a lot. You learn the sound of their footsteps, the look they give you when they want something and the difference between a happy bark and an I really mean it bark.

But there is still so much happening beneath the surface.

Why does your dog sniff the same patch of grass for minutes? Why do they follow you from room to room? Do they understand when you're talking to them? And why does a familiar toy suddenly become the most exciting thing in the world when you bring it back after a few days?

Understanding dogs is less about teaching them to behave like us and more about learning to see the world as they experience it.

Here are a few books and films worth spending some quiet time with.

Inside of a Dog — Alexandra Horowitz

A beautiful place to begin. Horowitz, a cognitive scientist who runs the Dog Cognition Lab at Barnard College, explores the world through a dog's senses — especially their extraordinary sense of smell, perception and cognition. The recently revised edition also brings in newer research on how dogs experience their everyday world.

It doesn't teach you how to make your dog sit or stay. Instead, it asks a much more interesting question:

What is it actually like to be a dog?

Decoding Your Dog — American College of Veterinary Behaviorists

For the practical dog parent, this is one to keep close. Written by veterinary behaviour specialists, it looks at common behaviours and explains why they happen, along with science-based approaches to addressing them. The San Francisco SPCA describes it as a clear and rigorously researched resource for understanding canine behaviour.

It is particularly helpful when you're wondering, “Why does my dog do this?” rather than simply, “How do I stop it?”

Dog Sense — John Bradshaw

Bradshaw takes a broader look at how dogs became our companions and how their evolutionary history still shapes the way they behave today.

It is a good reminder that dogs aren't simply small humans in fur coats. They have their own sensory world, instincts and ways of communicating — and understanding those differences can make living together much easier. Scientific American includes it among its recommended science books for dog lovers.

How to Behave So Your Dog Behaves — Sophia Yin

If you want to understand how learning actually works, this is a particularly useful read. It connects the science of canine behaviour and learning with practical training, using a science-based approach. The SF SPCA recommends it as a resource for understanding training theory and applying it in everyday life.

And then, when you're ready to put the books down, there are a few things worth watching too.

Dogs Decoded — NOVA

This documentary explores what science has discovered about canine intelligence, communication and the remarkable abilities of dogs. It also visits research settings studying canine cognition and working dogs, giving a glimpse into how researchers actually investigate what dogs can understand.

It is a lovely one to watch when you want to see the science come alive rather than simply read about it.

The real takeaway

You don't need to read every book or understand every study to become a better dog parent.

Sometimes, simply knowing that your dog experiences the world differently changes the way you look at them.

The sniffing isn't just sniffing.
The staring isn't always just staring.
The sudden burst of energy isn't necessarily mischief.

There is usually a reason behind the behaviour.

And perhaps the best thing we can give our dogs is not another command, another accessory or another toy — but the patience to understand the little creature standing beside us.

Because the more we understand them, the better we learn to love them in the way they understand.