Every summer I clear my surgery diary for a run of cases that all start the same way: a working dog, a dry paddock, and a small barbed seed that has decided to travel. By August I’ll have lanced abscesses, flushed ear canals under sedation, and on a few occasions opened a chest to chase a grass awn that had migrated halfway across the body. None of it was bad luck. Almost all of it was preventable with a five-minute check at the end of the working day.
Grass awns — foxtails, wild barley, brome, ryegrass seed heads, whatever your local name for them — are the most underestimated field hazard I deal with. They aren’t poisonous, they don’t bite, and most owners walk past thousands of them without a second thought. But their shape is the problem. The seed is tipped with microscopic backward-facing barbs, so once it lodges in fur, skin, or a body opening, it can only move one way: forward, deeper in. It cannot reverse out. That single piece of botany is why a free seed in a dry pasture becomes a sedation, a flush, and sometimes a major operation.
Why Working Dogs Are the Classic Victims
A house dog walking on a lead through cut grass rarely gets into trouble. The dogs I treat are the ones doing the job: covering pasture at speed, pushing through standing hay and field margins, nose down in the stubble, ears flapping. That working lifestyle puts every vulnerable part of the dog directly into contact with the seed heads at the exact time of year — mid to late summer — when the awns have dried, gone brittle, and detach at the slightest brush.
Coat type matters too. A short, sleek-coated dog sheds many seeds. A Border Collie or rough-coated working breed with feathering on the legs, between the toes, and around the ears is a magnet — the long hair catches the awn and holds it against the skin long enough for it to start drilling in. The same dogs that are built for the work are built to collect the hazard.
The other reason working dogs end up on my table is stoicism. These dogs don’t complain. A pet might limp and make a fuss; a working Collie will keep going on a paw that’s quietly abscessing because that’s the temperament we’ve bred for. By the time the owner notices, the seed has often already migrated. This is the same problem I see with exercise-induced soft tissue injuries — the dog masks the early signs, and the owner is the only early-warning system there is.
Where They Hide and the Warning Signs by Location
The single most useful thing I can teach an owner is to read the symptom by location, because each entry point gives itself away differently.
Between the toes and the paw pads. This is the commonest site by a distance. The seed lodges in the webbing, drills in, and forms a painful swelling or a weeping abscess that often has a small dark hole at its centre. The tell is obsessive licking of one specific paw or one specific spot between two toes. Not general paw-licking — a fixation. If a dog won’t leave one toe-web alone after a day in the field, assume a grass awn until proven otherwise.
Ears. An awn that drops into the ear canal causes sudden, violent head-shaking and tilting to the affected side, often starting the moment the dog comes in from work. The dog may cry out, paw at the ear, or hold the head cocked. Awns can sit deep against the eardrum where you’ll never see them, and they don’t come out with a wipe — this is a sedation-and-otoscope job, fast, because they can perforate the drum.
Nose. A seed sniffed up the nostril triggers a sudden, frantic, almost explosive run of sneezing that comes out of nowhere — far more dramatic than ordinary sneezing — sometimes with a fleck of blood or a one-sided nasal discharge afterwards. The violent phase often settles within an hour, which fools owners into thinking it passed. It didn’t; the awn has simply moved deeper and gone quiet.
Eyes. An awn caught under the eyelid or third eyelid causes a suddenly squinting, weeping, painful eye with the dog rubbing it on the ground or with a paw. This is genuinely urgent — an awn can scratch and ulcerate the cornea within hours.
Skin and the “armpit.” Awns work into the soft skin of the groin, armpit, flank, and under the collar, producing a draining tract or a lump weeks after the original contact. These are the migrating cases that turn up far from where the seed went in.
The Post-Work Check That Prevents Surgery
Here is the routine I give every working-dog owner, and it takes five minutes at the end of the day while the dog is winding down.
- Feet first. Spread every toe and look and feel right down into each web and around the pads. Run your fingers against the lie of the hair — awns hide point-first against the skin. Check the dewclaws.
- Ears. Lift each flap, look into the canal, and give the base a gentle squeeze; a flinch or a head-shake when you touch one ear is a flag.
- Face and eyes. Check the nostrils and the corners of the eyes. Run a hand up the muzzle.
- Armpits, groin, and under the collar. Feel into the soft hairless creases where seeds collect.
- Coat sweep. Run both hands against the grain over the whole body, paying attention to the feathered legs and the belly.
If you do this daily through awn season, you’ll find ninety per cent of seeds while they’re still sitting in the fur, before they’ve drilled in — and a seed brushed out of the coat is a non-event.
Remove It Yourself, or Go to the Vet?
The honest dividing line is the surface versus the inside. If you find a whole, intact awn tangled in the coat or sitting loosely between two toes and you can grasp it with fine tweezers and draw it out cleanly in one piece — do it, then check the spot for a day or two. That’s the win the daily check is designed to deliver.
But once a seed has broken the skin, gone into an ear canal, up a nose, or under an eyelid, stop and ring the vet. The reasons are practical: you cannot see how deep it has gone, the barbs mean you’ll snap it and leave the worst part behind, and the entry points that matter most — ear, eye, nose — are exactly the ones that cause real damage when probed blindly. A sedated, properly visualised removal in the first day or two is a quick, cheap, satisfying procedure. The same seed left to migrate for a fortnight becomes an abscess to drain, a tract to explore, or worse.
Don’t wait for the swelling to “settle on its own,” and be wary of a sudden sneezing fit or head-shake that stops after an hour. Quiet doesn’t mean gone — it usually means the awn has moved somewhere you can’t see it.
The Season, and the Long Game
Awn risk runs from roughly midsummer until the autumn rains soften and rot the seed heads. Through that window, the cheapest insurance is management: keep the worst seeding margins topped or fenced off where you can, clip the hair between the toes and around the ears of feathered dogs before the season starts, and never skip the post-work check. It sits alongside the rest of your warm-weather routine — the same daily once-over that catches ticks and the early heat and hydration problems covered in the parasite-prevention guide.
A grass awn is a tiny thing. But it is the clearest example I know of a hazard where five minutes of owner attention reliably prevents a trip to the operating table. The dogs won’t tell you it’s there. That’s the whole job — you have to go and look.