A grass awn, or foxtail, is the barbed seed head of dry grasses such as cheatgrass and foxtail barley. Its backward-facing barbs let it travel forward into skin, ears, noses and eyes, but never back out. Awns do not show on X-rays, so an embedded awn needs prompt veterinary removal rather than watchful waiting, because the seed keeps migrating deeper.
Why August turns Okanagan grass into a problem
For most of the spring, the grasses on our dry hillsides are green, soft and harmless. Then the irrigation stops reaching them, the heat sets in, and by late July and August the seed heads have gone brittle and started to shatter. Each seed detaches from the stalk on its own, sits at dog height, and waits for something furry to brush past.
This is one hazard where the Okanagan is genuinely different from the coast. Cheatgrass, foxtail barley and wild barley thrive in exactly the bunchgrass and sagebrush terrain that surrounds Kelowna, and they colonise disturbed ground with enthusiasm. Think of the sun-baked slopes on Black Mountain, the open stretches of Myra-Bellevue Provincial Park, the grassy shoulders along the Mission Creek Greenway, and the dry upper flanks of Knox Mountain Park. Closer to home, the roadside verges, back alleys, vacant lots and unwatered corners of Rutland yards produce the same seed heads without anyone planting a thing.
The awkward timing is that this is also when the walks feel best. Evenings cool off, the light lasts, and dogs are off through the tall stuff at the edge of the path. That short detour into a patch of dry seed heads is usually all it takes.
An awn is not just a fancy burr
Burrs are a nuisance you comb out. An awn is a piece of natural engineering, and understanding the mechanics explains why owners get caught out.
The seed is a narrow spear with a stiff point at one end and rows of fine barbs angled backward along its length. Those barbs work like the teeth on a ratchet. Every time your dog moves, every muscle contraction and every step, the awn is nudged a fraction further in the direction it is already pointing. The barbs grip the tissue behind it and block any movement the other way. It cannot reverse, it cannot fall out, and the body has no mechanism for pushing it back to the surface.
The second problem is that an awn is plant material, so it is effectively invisible on a standard radiograph. A dog can have a seed working its way through soft tissue while the imaging looks unremarkable, which is why the story you tell us about a walk through dry grass carries real diagnostic weight. Our pet diagnostics can show swelling, fluid and tracking damage, and ultrasound sometimes picks up a migrating seed, but the awn itself rarely announces itself on a plain X-ray.
Where awns get in, and what you would actually notice
Almost every case starts with a sign that seems unrelated to grass. These are the classic entry points:
- Between the toes. The most common site by far. A seed lodges in the webbing, punctures the skin and disappears. Days later there is a firm, hot, painful swelling on top of the foot or between the toes, often with a small weeping hole. Owners usually assume a spider bite, a cyst or a sting.
- In the ear. A dog that was fine two minutes ago suddenly shakes its head violently, tilts it to one side, paws at the ear and cannot settle. The abruptness is the tell. Ear trouble that builds over a week is a different story; ear trouble that starts mid walk is suspicious for something physical in the canal.
- Up the nose. Sudden, explosive, repeated sneezing fits that come out of nowhere, sometimes with pawing at the muzzle and a discharge from one nostril only. One-sided is the detail worth remembering, because ordinary irritants tend to affect both sides.
- In the eye. Squinting, a clamped shut eyelid, watering, redness and rubbing on the ground. An awn can tuck under the third eyelid where you will not see it from outside.
- Inhaled or swallowed. Less common and harder to spot. Persistent coughing, retching, gagging or hard swallowing after a run through dry grass deserves a look.
- Through the coat. Armpits, groin, the underside of the tail and the skin folds behind the elbow all trap seeds against thin skin. Long coats, feathered legs and hairy feet collect them best.
Why waiting a few days is the wrong plan
With most small injuries, giving it a day or two is sensible. An awn is the exception, and the reason is simple: it does not stay put.
A seed that entered between two toes on Tuesday is not in the same place on Friday. Migration through soft tissue is slow but relentless, and along the way the awn drags bacteria in with it. That combination produces abscesses, draining tracts that keep reopening, and inflammation that spreads well beyond the original entry point. Awns have been documented travelling into joints, up limbs, and into the chest and abdomen from an entry point nobody noticed. Retrieval gets harder, and more invasive, with every day it stays in.
So the practical rule is that the easiest awn to deal with is the one found this afternoon. If your dog was in dry grass and something changed abruptly afterward, that is a reason to call rather than a reason to observe. Our urgent care service exists for exactly this kind of same-day problem during clinic hours.
Inside the exam room: finding an awn and getting it out
Expect a careful physical examination first: the feet spread toe by toe, the ear canals, the eyes stained and checked, and a look at any swelling or draining spot. Where the awn sits shallow in the skin surface, a veterinarian may be able to retrieve it there and then.
Often, though, sedation is the right call, and it is worth understanding why rather than seeing it as an escalation. A dog with a barbed seed against an eardrum or deep in a nasal passage is in genuine pain and will not hold still for the fine work required, and a partial retrieval that snaps the seed leaves the worst of it behind. Sedation lets the team pass an otoscope right to the bottom of the canal, flush and examine a nasal passage properly, or open and explore a tract in the foot until it is genuinely clear. Where a migrating awn needs surgical exploration, that is handled through our surgical services, with pain control and a written recovery plan for home.
The one thing you can safely handle yourself
If you can see a whole awn simply caught in the fur, resting on the coat and not attached to skin, lift it off and check the rest of the coat while you are there. That is housekeeping.
Everything else is a veterinary job. Please do not go digging with tweezers at a swollen toe, and never put tweezers, cotton buds, water, oil or drops into an ear, a nostril or an eye to try to fish something out. The realistic outcomes are a broken seed with the barbed section left deep inside, a pushed-in awn that is now further along than it was, or damage to an eardrum or eye surface that turns a retrievable problem into a lasting one. Ring us, describe where your dog was walking and what you are seeing, and let the team work out what needs to happen.
Keeping awns out of your dog this season
Prevention here is genuinely effective, and none of it is complicated:
- Steer around fields, verges and hillsides that have gone golden and gone to seed. Stay on the packed path rather than the fringe, and save the open grassland routes for after the fall rains knock the seed heads down.
- Run a hand over your dog after every walk, not just a glance. Spread every set of toes, check the webbing, lift the ear flaps, and feel through the armpits, groin and tail base.
- Keep the hair between the pads and around the ear openings trimmed short through August and September. A tidy foot has far fewer places for a seed to hide, and clipped feet are quick to check.
- Brush thick and feathered coats out properly. Mats catch seeds and hold them against the skin, which is precisely the position an awn needs. Dogs whose coats have got away from them, or who will not tolerate a normal groom, can be handled through our medical grooming service.
- Mow your own yard before the grass sets seed, and pull the foxtail barley that comes up along fence lines, gravel edges and lane ways. It seeds early and spreads fast.
If seasonal outdoor hazards are on your mind generally, our earlier guides to spring trail safety in Kelowna and outdoor safety on Kelowna trails and lakes cover ticks, wildlife and water. This one is the awn-specific companion to both.
Signs that warrant an exam
- Sudden head shaking, head tilt or ear pawing that began on or straight after a walk
- A swollen, hot or painful spot between the toes or on the foot, with or without a discharging hole
- Violent sneezing fits, or discharge from one nostril
- A squinting, watering or held shut eye
- Coughing, gagging or repeated swallowing after time in dry grass
- Any lump, sore or draining tract that keeps returning after it seemed to settle
Frequently asked questions
Can a foxtail come out on its own?
No, and that one fact is the piece worth carrying around with you. The barbs point backward, so the seed can only advance, and there is no route by which it works its way back to the surface. Time makes retrieval harder rather than easier, which is the opposite of most minor injuries.
Will an X-ray find a grass awn in my dog?
Usually not, because plant material is not dense enough to show on a standard radiograph. Imaging is still useful, since it can reveal the swelling, fluid or tissue damage an awn leaves in its path, and ultrasound occasionally locates one. In practice, the history of a walk through dry grass plus a careful examination often points the way more reliably than the pictures do.
My dog started shaking his head halfway through a walk. Is that an awn?
It is a sign that warrants an exam the same day, and an awn in the ear canal is high on the list when the onset is that abrupt. Ear infections generally build gradually over days; a dog that was comfortable one minute and frantic the next has usually had something physical happen. Please do not pour anything into the ear before it has been examined.
Are cats affected by foxtails too?
Yes, though far less often than dogs, because cats groom fastidiously and tend not to plough through seed heads at speed. Outdoor cats in Rutland can still pick awns up in the ears, between the toes or in the eyes. The same rule applies: anything embedded, or anywhere near an ear, nose or eye, needs a veterinary examination rather than a home attempt.
When do foxtails stop being a risk in Kelowna?
The riskiest window runs from roughly midsummer, once the seed heads dry and shatter, through the fall until wet weather flattens the dead grass. Late summer and early autumn are the peak, and dried seeds sitting in leaf litter, gravel or a garage corner can still cause trouble after the plants themselves have died back.
Book a check before that swelling turns into something bigger
Noticed a sore toe, a sudden sneezing fit or an ear your dog will not leave alone after a Rutland walk? Bring them in. Reach McCurdy Animal Hospital on +1 (778) 484-9446, or book through urgent care, so the feet, ear canals, nose and eyes can be checked properly and anything lodged can be lifted out safely.
Published by the team at McCurdy Animal Hospital.
Everything above is written for general education. It cannot stand in for a hands-on examination, a diagnosis or a treatment plan from a veterinarian. Where a concern is urgent, phone McCurdy Animal Hospital within our hours, or find an emergency veterinary hospital outside them.
McCurdy Animal Hospital
948 McCurdy Rd #140, Kelowna, BC V1X 2P7
Phone: +1 (778) 484-9446
Hours: Monday to Friday: 8:00 AM to 8:00 PM
Saturday and Sunday: 9:00 AM to 5:00 PM
Statutory Holidays: Closed