The change from normal is the clue
A dog in pain seldom announces it dramatically. More often the sign is a departure from that individual dog's habits: the greeter who stays in his bed when the doorbell rings, the keen eater who walks away from breakfast, the steady stair-climber who now pauses at the bottom step. Start by asking what is different today, because a painful ear, tooth, joint, or belly usually changes behaviour before it produces an obvious wound or limp.
Vocal sounds can happen — a yelp when a sore area is touched, whining at night, or growling when a child leans over — but silence does not rule pain out. Many dogs become quieter, sleep in a tighter curl, or choose hard floors because getting up from a deep bed hurts.
Body signs to look for at home
Watch how your dog moves. Limping, bunny-hopping with both back legs, shifting weight off one paw, a roached or tucked posture, trembling, and reluctance to jump into the car or use stairs all point to discomfort somewhere. Panting while resting in a cool room, drooling when he does not normally drool, squinting, pawing at the face, or repeated licking and chewing at one joint or patch of skin are also worth noting.
Appetite and toilet habits add information. A dog who chews on one side may have dental pain; one who strains, cries, or asks to go out repeatedly through the night may be uncomfortable in the belly or urinary tract. Take a short phone video of the gait or the odd posture — movement that vanishes under clinic nerves is often clear on video.
What to do, and what not to do
Make the next hours easier without masking the problem. Keep walks short and on the lead, block stairs if climbing looks hard, offer water and a quiet resting place, and stop games that involve jumping or twisting. Check gently for a thorn, cracked nail, cut pad, swelling, or a tick, but stop if your dog flinches, snaps, or tries to move away — a normally gentle dog may bite when a sore spot is pressed.
Never give a dog a pain reliever made for people, and do not restart an old prescription from a previous problem. Drugs that are routine for humans can seriously harm dogs, and what was given yesterday was chosen for yesterday's weight and condition. Instead, write down when the signs began, which leg or area seems involved, appetite, drinking, and toileting.
When this becomes a vet call today
Contact your vet the same day if pain signs are sudden, if your dog cries out, cannot settle, refuses food, has a swollen belly, struggles to pass urine, or cannot bear weight on a leg. Go urgently if there is collapse, breathing difficulty, pale gums, repeated vomiting, or a suspected injury from a fall or road accident. A dog who is simply a bit stiff after an unusually long hike but eats, drinks, and improves with rest can reasonably be discussed at the next routine call — any worsening resets that judgement.
Keeping a dated note of pain episodes, what triggered them, and how long they lasted in KinsLe's Pet Passport turns your home observations into a timeline your vet can act on at the visit.