Moderate severity

Grass-Seed Foreign Body

A barbed grass seed or awn that lodges in the skin, paws, ears or eyes of an outdoor cat and works its way inward, causing infection and pain.

⚠️ Common symptoms

Sudden, persistent licking or chewing at a paw, often between the toesA painful swelling or weeping tract on the skin or between the toesViolent head-shaking or a tilted head if a seed is in the earA squinting, watering, painful eye if a seed lodges under the lidSneezing or pawing at the nose if a seed is inhaled

A grass-seed foreign body is a common warm-weather problem in cats that roam through long grass in late summer, when the seeds of certain grasses ripen and dry into hard, arrow-shaped awns. These awns are tipped with fine backward-pointing barbs that snag easily in fur and then, crucially, can travel in only one direction — forward, into the body.

Once caught, a seed may pierce the soft skin between the toes, slip into an ear canal, lodge beneath an eyelid, or be inhaled up the nose. Because the barbs prevent it from backing out, the seed keeps migrating through tissue, dragging bacteria with it and setting up a painful, often abscessing infection. The classic sign is a cat that suddenly will not leave one paw alone, or that develops a weeping swelling with a small central hole.

Seeds in the ear cause frantic head-shaking, while those under an eyelid produce a suddenly painful, streaming eye, and an inhaled seed triggers fits of sneezing. None of these will settle until the seed is removed, and a migrating awn can travel surprisingly far, so early veterinary attention is important. With the seed out, the tract cleaned and infection treated, most cats recover quickly — and a simple post-walk check of a roaming cat's feet, ears and eyes in seed season is the best prevention.

🔍 Causes

Certain grasses produce arrow-shaped seeds or awns with backward-facing barbs. When these catch in a cat's coat, paws, ears, eyes or nose, the barbs allow the seed to move only inward, so it burrows through skin and tissue rather than falling out, carrying bacteria with it and creating infection.

🛡 Prevention

Check outdoor cats over after time in long, dry grass, paying attention to between the toes, inside the ear flaps and around the eyes. Keeping garden grass trimmed in late summer, when seeds ripen and dry, reduces the risk, as does gently combing a long-haired cat's feet and ears.

💊 Treatment

The seed must be found and completely removed, which usually requires a vet. Superficial seeds may be lifted out with fine forceps, but those that have migrated deeper often need sedation or a minor procedure to locate and extract them, followed by cleaning of the tract. Antibiotics and pain relief are given to treat infection and keep the cat comfortable, and any abscess is drained.

When to see a vet: See a vet promptly if a cat suddenly and persistently licks one paw, develops a painful swelling or discharging sore, shakes its head violently, or has a suddenly sore, watering eye. Grass seeds do not resolve on their own and cause worsening infection the longer they remain.

⚕️ Medical disclaimer

  • This information is educational only and is not a substitute for veterinary advice.
  • Symptoms overlap between conditions — only a vet can diagnose accurately.
  • Never withhold treatment or self-medicate based on information found online.
  • When in doubt, call your vet. Early intervention almost always leads to better outcomes.

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