That rhythmic click of toenails on the kitchen floor at 5:47 in the morning is its own kind of alarm clock, and every Border Collie owner learns the sound by heart. Click, click, click, pause. Breakfast, then work, then more work.

Which is exactly why the silence is so loud.

Border Collies are terrible at hiding boredom and outstanding at hiding pain. Bred to run twenty miles across a hillside and then look at you like you’re the one slowing things down, they will absolutely keep working through an injury, a fever, or a slow-building illness because stopping simply is not in the job description.

That stoicism is a gift on a sheep farm. In a living room, it’s a problem.

So the signals you get are rarely dramatic. They’re small edits to a familiar routine: a half second of hesitation before the leap, a ball dropped in the grass instead of shoved into your shin.

Here are ten of those edits, and why they’re worth a phone call.

1. The Fetch Session That Ends Early

A Border Collie quitting a game is not a Border Collie being polite. It’s closer to a factory shutting down mid-shift.

Watch for the dog who brings the ball back twice, then wanders off to lie in the shade with their back to you. This breed has an almost pathological inability to self-regulate around a thrown object, so voluntarily walking away means something is genuinely overriding that drive.

Pain is the usual suspect. Early hip dysplasia, a soft tissue strain, or the beginnings of arthritis all show up first as reduced enthusiasm rather than an obvious limp.

A working dog that chooses rest over the job is telling you something the job was hiding.

Note how long the shortened sessions last. Two days of low energy after a huge weekend is recovery; two weeks of it is a symptom.

2. Shadow and Light Chasing That Won’t Switch Off

Plenty of Collies flirt with shadow chasing. Sunlight hits the floor, a reflection wobbles off a watch face, and suddenly the dog is locked on like a missile.

The concerning version looks different. The dog can’t be called off, doesn’t respond to food, and returns to the same patch of wall the second you stop physically intervening.

Why it matters medically

Compulsive behaviors in this breed are frequently tangled with anxiety, gastrointestinal discomfort, or (less commonly) partial seizure activity. Vets often want to rule out the physical causes before anyone starts talking about training plans.

Film it. A thirty second phone video of the behavior is worth more to your vet than five minutes of you describing it in the exam room.

3. A Sudden Case of "Selective Hearing"

The whistle that used to bring your dog flying across a field now gets ignored. Frustrating, sure, but also worth taking seriously.

Border Collies are not a breed known for tuning you out. Their entire genetic rΓ©sumΓ© is built on responsiveness to human direction from a distance.

Sudden non-response often means the sound isn’t arriving. Ear infections, wax buildup, and age-related hearing loss all present as "he’s being stubborn lately," which is why so many owners try harder training before they try a vet.

The vision side of things

Collie Eye Anomaly and Progressive Retinal Atrophy are both known concerns in the breed, and both can start subtly. A dog who hesitates on stairs at dusk, misjudges a catch they’ve made a thousand times, or bumps a doorframe in dim light deserves an eye exam.

Test it casually at home: toss a treat silently and see whether they track it, then try again with a sound cue. Different results tell you which system is struggling.

4. Head Pressing Against the Wall

This one is short because it needs to be. A dog standing with the top of their skull pressed into a wall, a corner, or a piece of furniture, holding still, is an emergency.

Head pressing can indicate neurological problems, liver dysfunction, or toxin exposure.

Head pressing is never a quirk, never a new sleeping position, and never something to watch for a few days.

Go now. Not tomorrow.

5. Licking One Spot Like It Owes Them Money

Grooming is normal. Sustained, focused licking of a single wrist, paw, or flank is not.

Border Collies channel stress into repetition, so it’s tempting to file this under anxiety and buy a puzzle feeder. Sometimes that’s right. Often there’s a splinter, a foxtail, an allergic flare, or a joint aching underneath that gorgeous fur.

Foxtails deserve special mention if you live anywhere with dry grass. Those barbed seed heads burrow through skin and migrate, and they show up in paws, ears, and armpits with alarming regularity in summer.

Part the coat and actually look. Redness, a raw patch, or a small dark point in the skin is your answer.

6. The Bunny Hop After a Big Run

Some gait changes announce themselves. Others hide inside a dog who is still very much running.

Bunny hopping means using both back legs together instead of alternating, a rabbit-like motion that’s especially visible when the dog accelerates. It’s a classic early flag for hip problems.

Similarly, watch for a dog who sits with one leg kicked out sideways, hesitates before jumping into the car, or takes stairs one at a time when they used to fly.

None of these are dramatic. All of them are data.

7. Flinching at Sounds They Used to Ignore

Noise sensitivity is common in the breed, and thunderstorm phobia is practically a rite of passage for some lines. That’s baseline.

What isn’t baseline: a confident five year old dog who suddenly startles at the dishwasher, the microwave beep, or a dropped spoon.

New fear in a previously steady dog frequently traces back to pain. Dogs in discomfort become hypervigilant because their nervous system is already running hot, and the ordinary world starts feeling less predictable.

Pair that observation with anything else on this list. Two small changes at once are far more meaningful than one.

8. A Swollen Belly and Retching That Brings Nothing Up

Deep-chested dogs carry an elevated risk of bloat, and while Border Collies aren’t the poster breed for it, they are absolutely capable of it.

The picture is fairly specific: a tight or distended abdomen, restlessness, pacing, drooling, and repeated attempts to vomit that produce foam or nothing at all.

Unproductive retching plus a hard belly is a drive-to-the-clinic situation, not a wait-and-see situation.

Gastric dilatation-volvulus can become fatal within hours. Nobody has ever regretted an unnecessary emergency visit for suspected bloat.

9. Housetraining That Falls Apart Overnight

A reliably housetrained adult suddenly having accidents inside is a medical question first and a behavior question second.

Urinary tract infections, kidney issues, diabetes, and incontinence related to hormones all announce themselves this way. So does a dog who simply cannot make it outside fast enough because something hurts when they move.

The water bowl clue

Keep an eye on drinking. Noticeably increased thirst alongside accidents is a combination vets take seriously, and it’s easy to track: fill the bowl to the same line each morning and notice how fast it empties.

Bring a fresh urine sample if you can manage it. Your vet will be thrilled, and it saves a step.

10. The Eye That Goes Quiet

Border Collie people talk about "the eye," that intense crouching stare a working dog uses to move stock. It’s the most recognizable thing this breed does.

Its absence is equally recognizable.

A dog who stops offering eye contact, stops checking in with you on walks, and stops that low-slung stalking posture during play has changed something fundamental about how they engage with the world. Owners often describe it as the dog seeming further away than usual, mentally rather than physically.

That flatness can point toward pain, thyroid dysfunction, cognitive decline in older dogs, or simple depression following a household change.

Trust the read. Nobody knows the difference between your dog being tired and your dog being off better than you do, and that instinct is exactly the thing a good vet wants to hear about.