I am feeling guilty about it, honestly.
My dog a six-year-old Labrador mix had been "acting a little off" for almost three weeks before I finally took him to the vet. He wasn't limping. He wasn't crying. He was eating fine, drinking water, wagging his tail when I came home. I thought maybe he was just tired, or maybe the summer heat was getting to him.
Turns out he had a pretty significant ear infection that had gone deeper than I could see. The vet looked at me and said something I've never forgotten: "Dogs are really good at hiding pain. It's actually a survival instinct."
That hit different, as they say.
Ever since that visit, I've become almost obsessive about learning the subtle, easy-to-miss signs that a dog is in discomfort. I've volunteered at a local shelter, fostered seven dogs over the past four years, and talked to enough vets and dog trainers to fill a small notebook. What I've learned is that most of us even people who love their dogs deeply — are only watching for the obvious stuff. The yelping, the limping, the not eating. But pain in dogs is way more complicated than that.
So let me share what I've picked up, the mistakes I've made, and what actually helped me get better at reading my dogs.
Why Dogs Hide Pain (And Why That's a Problem for Us)
Before we get into the signs, it helps to understand why dogs mask discomfort so well.
Dogs are descended from pack animals. In the wild, showing weakness meant becoming a target — for predators, or even for other members of the pack. So over thousands of years, dogs evolved to keep pushing through pain and keep going about their day. It's not stubbornness. It's not them being "tough." It's genuinely wired into them.
The problem is that this instinct works against us as pet owners, because by the time a dog is obviously in pain — crying, refusing to move, snapping when touched — the issue has often been going on for a while. We're always playing catch-up.
And I say this from personal experience. With Max, with my foster dog Biscuit who turned out to have hip dysplasia, and with my current dog Rosie, who I almost missed a dental abscess in because she kept eating her food (slowly, but still eating).
The Signs Most People Actually Miss
1. Subtle Changes in Posture or the Way They Stand
This one took me the longest to catch onto. Dogs in pain — especially chronic joint or back pain — often shift their weight. You might notice your dog standing with their back slightly hunched, or putting more weight on their front legs than usual.
With Rosie, I noticed she started sitting kind of "sideways" — like she didn't want to put equal pressure on both hips. It looked almost lazy at first. I thought she was just being goofy. But when I mentioned it offhandedly to my vet, she immediately got down on the floor to examine Rosie's hips and lower back.
Turns out there was early arthritis forming in her left hip. Caught it before it got bad, thankfully, but only because I happened to mention this "quirky sitting thing."
Watch how your dog stands when they're just hanging around the house. If you see them shifting, leaning, or holding a leg slightly lifted without putting full weight on it — even just occasionally — that's worth noting.
2. Changes in Sleep Patterns or Sleeping Positions
Dogs in pain sleep differently. They might sleep more (resting because movement hurts), or they might actually sleep less because they can't get comfortable.
You might also notice them changing their usual sleeping spot. If your dog used to jump up on the couch and suddenly stops — or starts sleeping stretched out flat instead of curled up — that's your body telling you something their mouth can't.
My foster dog Biscuit stopped sleeping on his bed in the corner and started sleeping on the cool tile floor. I thought he was just hot. He was actually trying to soothe inflamed hip joints. I learned this after the vet diagnosed him, and I felt terrible for not picking up on it sooner.
3. Subtle Behavior and Personality Changes
This one is sneaky because it's so easy to explain away.
"Oh, he's just grumpy today." "She's been a little clingy lately, probably wants attention." "He's not as playful as usual, maybe he's getting older."
Sound familiar?
A dog that's suddenly more withdrawn, less interested in play, more irritable when touched in certain spots, or who flinches slightly when you pet them in a specific area — these are real signals. I've started paying attention to where my dog doesn't want to be touched. If Rosie turns her head away or tenses up when I scratch near her ears, I know to look closer.
Dogs who are in chronic or moderate pain can also become more clingy and anxious than usual. They want their person nearby because they feel vulnerable. I've seen this with both of my own dogs and with fosters.
4. Changes in Appetite — Even Small Ones
Everyone knows a dog who's not eating is probably sick. But what about the dog who's eating... just a little slower? Or leaving a few bites in the bowl when they used to lick it clean?
Dental pain is one of the most under-diagnosed sources of pain in dogs, and it's almost invisible to owners because dogs keep eating through it. They just adapt — maybe chewing on one side, or chewing less thoroughly, or favoring softer food.
When Rosie had her abscess, she was still eating every meal. But she was slower than usual, and she stopped doing her little happy dance when I got the food bowl out. That was the clue. A dog who used to get excited about meals and suddenly just... walks over calmly? That's worth a vet visit.
According to the American Veterinary Medical Association, dental disease affects the majority of dogs over three years old (https://www.avma.org/resources-tools/pet-owners/petcare/dental-care-dogs-and-cats), and most of it goes unnoticed until it's advanced. Regular dental checks are something I'm now militant about.
5. Excessive Licking or Grooming One Spot
Dogs lick wounds. Everyone knows that. But they also lick areas that hurt internally, even when there's no visible wound.
A dog licking their paw repeatedly? Could be allergies, sure. But it could also be joint pain in that foot, or nerve pain. A dog licking their flank or lower belly over and over? That could indicate internal discomfort — bladder issues, digestive pain, or something else worth investigating.
I once fostered a dog who kept licking his front left leg obsessively. No visible cut, no redness. Turned out he had a small fracture from an injury that had happened before he came to the shelter. The licking was his way of trying to soothe the pain.
If you notice your dog fixating on licking or chewing one specific spot — especially if they return to it repeatedly — don't just assume it's a surface-level issue.
6. Changes in Breathing or Panting
Panting isn't just about heat. Dogs pant when they're stressed, anxious, and yes — when they're in pain.
If your dog is panting heavily and it's not particularly hot, they haven't just exercised, and they're not visibly excited or scared — take note. Pain-related panting is often more shallow and faster than heat panting. The dog might also seem restless at the same time, unable to settle down.
I noticed this with Max once after he'd apparently tweaked his back jumping off the bed. He wasn't limping or crying. He was just panting and couldn't seem to get comfortable anywhere. Kept lying down, getting up, moving to another spot. That was the sign that something was wrong.
7. Reduced Activity Levels — Gradual Enough to Seem Normal
This one gets me the most, and I think it's probably the most common missed sign out there.
Because here's the thing: if your dog slows down over the course of weeks or months, your brain adjusts to the new normal. You stop remembering that they used to run to the door when you picked up the leash. You stop noticing that they used to be able to jump into the car and now they hesitate at the bumper.
I didn't notice Max slowing down until my neighbor — who hadn't seen him in a few months — commented on it. "He seems a lot calmer than usual," she said. And I realized she was right. He had gotten calmer. I'd just slowly accepted it as him "maturing."
He was in the early stages of hip arthritis.
The lesson I took from that: take mental (or even actual written) notes about what your dog can do physically right now. Can they jump on the couch? Do they run to greet you? How far can they walk before they slow down? Revisit those benchmarks every few months. Gradual change is the easiest thing to miss.
Practical Things You Can Do Right Now
Start a simple behavior log. It doesn't have to be fancy — a note on your phone works. Jot down things your dog does regularly: jumps up, chases a ball, runs on walks, climbs stairs. Then check back in monthly. Decline is easier to spot when you have something to compare it to.
Do a gentle hands-on check weekly. Run your hands slowly over your dog's entire body — legs, spine, neck, belly, ears, mouth area. Watch for flinching, tensing, or your dog turning to look at what you're touching. This physical check has helped me catch issues early more than once.
Pay attention to the greeting. How does your dog greet you at the door? If that excitement starts fading, it's worth paying attention to. Pain makes dogs less enthused about things they used to love.
Never just assume it's "old age." This is something I hear a lot and it drives me crazy, honestly. "Oh he's just slowing down, he's getting older." Slowing down might be old age, or it might be pain that's treatable. You won't know until you check. According to the Cornell University College of Veterinary Medicine (https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-information/pain-management-dogs), many dogs live with untreated chronic pain simply because owners and even some vets mistake it for normal aging.
Ask your vet about a pain assessment at your next visit. There are now standardized pain scales vets use — the Colorado State University Canine Acute Pain Scale is one well-known tool. Ask your vet to walk through it with you. Knowing what to look for in a structured way really changed how I observe my dogs.
Mistakes I Made (So You Don't Have To)
Waiting too long because "he's still eating." Food drive doesn't equal comfort. Rosie taught me that.
Assuming behavioral changes were training or attention issues. A dog who snaps when touched isn't "being bad." That's pain.
Not mentioning small things to the vet because I thought they were too minor. Now I bring a list to every vet visit. No detail is too small.
Comparing my dog to other dogs. "My neighbor's dog is way more energetic and they're the same age." Dogs are individuals. What matters is whether your dog is changing from their baseline.
A Note on Trusting Your Gut
Here's the thing I've come to fully believe after years of living with dogs: you know your dog better than anyone. If something feels off, even if you can't articulate exactly what it is, trust that feeling. Bring it up at the vet. Describe what you've noticed, even if it sounds vague.
I've said to my vet, "He just seems... different lately. I can't explain it." And a good vet will take that seriously and start looking. Because often, you're picking up on something real — something your dog's whole body is quietly communicating — even if your conscious brain can't name it yet.
Dogs don't complain. They don't tell us when they're hurting. They just keep wagging their tails and showing up for us, even when they're uncomfortable. The least we can do is learn to listen a little better.
For more information on canine pain recognition and management, check out resources from the American Animal Hospital Association at https://www.aaha.org/resources/pain-management-guidelines/ and the International Veterinary Academy of Pain Management at https://ivapm.org.
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