Your Dog Isn’t “Bad.” They’re Tired.
We’ve all been there.
You didn’t sleep well, your patience is hanging on by a thread, and suddenly everything feels… hard. More irritating. Less manageable. Someone breathes wrong in your general direction and you’re ready to file a formal complaint.
Now imagine that—but you’re a dog.
And instead of muttering under your breath, you’re sprinting laps around the living room, barking at a dust particle, and grabbing sleeves with your teeth like it’s your full-time job.
Welcome to the overtired dog.
What Happens When Dogs Don’t Get Enough Sleep?
A lot of people assume that a tired dog will just… crash.
Sometimes, yes.
But more often? They do the exact opposite.
They ramp up.
When dogs don’t get enough rest, their bodies don’t gently power down—they kick into a stress response. Stress hormones (like cortisol) increase, and instead of getting calmer, dogs get more wired.
That “crazy” behavior you’re seeing?
It’s not extra energy.
It’s exhaustion in a party hat.
What Overtired Actually Looks Like
Overtired dogs don’t walk around carrying a tiny pillow and sleep mask and yawning politely.
They look like:
• Hyperactivity that feels endless
• Barking at things they’d normally ignore
• Mouthiness, nipping, or biting
• Zoomies that feel less joyful and more… ahem, scary.
• Inability to settle, even when they clearly need to
It’s the canine version of a toddler melting down in a grocery store over the wrong color granola bar.
Sleep Deprivation = Lower Coping Skills
When you don’t sleep enough, your ability to handle stress tanks.
You’re more reactive. Less patient. More likely to overreact to small things.
Dogs are no different.
In fact, they’re often more affected because they don’t have the ability to rationalize or self-regulate the way we do.
A well-rested dog can process the world:
“Oh, that’s just a noise. I’m fine.”
A tired dog?
“THE WORLD IS ENDING AND I MUST SCREAM ABOUT IT.”
Lack of sleep makes dogs:
• More reactive
• More anxious
• Less able to cope with everyday stressors
• Worse at making good decisions (hello, counter surfing and life choices)
Sleep Is Where Learning Happens
This is the part that surprises people the most.
Sleep isn’t just about “recharging.” It’s when the brain processes and stores information.
So if you’re working on training—whether that’s basic manners or bigger behavior goals—and your dog isn’t getting enough rest…
You’re basically trying to teach someone who’s been awake for 36 hours.
Technically possible.
Practically… not great.
Rest is a critical part of learning, behavior change, and emotional regulation.
Not a bonus.
Not a “nice to have.”
A requirement.
“But My Dog Won’t Settle”
This is where things get tricky.
Because overtired dogs often can’t just choose to lie down and rest.
Their bodies are too amped up.
This is the same reason you can be exhausted but still scroll your phone for an hour, stare at the ceiling, or reorganize your entire life at 2am instead of sleeping.
Being tired doesn’t always equal being able to rest.
Dogs sometimes need help creating that off-switch:
• Structured downtime and decompression activities like sniffing, licking, and chewing.
• Quiet environments
• Predictable routines
• Safe, comfortable places to decompress
The Bottom Line
If your dog isn’t getting enough sleep, it is affecting their behavior.
Not maybe.
Definitely.
Before you assume your dog needs more exercise, more training, or more “discipline,” it’s worth asking a simpler question:
Is my dog actually getting enough rest?
Because sometimes the solution isn’t doing more.
It’s doing less.
And letting your dog sleep.
Because a tired dog isn’t a good dog, a tired dog is a tired dog.
Sara Sokol is owner of Mr. Dog Training in Brunswick and West Gardiner Maine; A positive reinforcement dog trainer with two facilities, offering both virtual and in person classes, and a Canine Enrichment Center, and has been voted best training in Maine.
