Grass seeds in dogs can cause painful irritation, infection and discomfort, particularly when they become trapped in the paws, ears or skin. If your dog suddenly starts limping, repeatedly shakes its head or licks one paw more than usual after walking through long grass, a grass seed could be the cause.
Grass seeds may look harmless, but some varieties have sharp, pointed ends that allow them to work their way into the skin or ear canal. Once embedded, they can be difficult to remove and may cause complications if left untreated.
Recognising the warning signs early can help your dog receive appropriate veterinary treatment before the problem becomes more serious.
What Are Grass Seeds, and Why Are They Dangerous for Dogs?
Grass seeds are small seed heads produced by grasses. Some have stiff, barbed or arrow-shaped structures that help them attach to animals and other surfaces. These features can allow certain seeds to penetrate a dog’s coat and skin.
Unlike a loose grass blade that can usually be brushed away, an embedded grass seed may move deeper into the tissue as your dog walks, scratches or shakes its head. It can trigger inflammation, pain, swelling and, in some cases, an abscess or infection.
Grass seeds commonly trapped in areas such as:
- Paws and between the toes: Seeds can penetrate the skin and cause pain, swelling or persistent licking.
- Ears: A seed entering the ear canal may cause sudden head shaking, scratching and discomfort.
- Eyes: Grass seeds can irritate the eye or become trapped beneath the eyelids, potentially damaging the cornea.
- Nose: Inhaled seeds may cause repeated sneezing, nasal discharge or nosebleeds.
- Skin and coat: Seeds can become lodged beneath the skin, particularly around the armpits, groin and other areas with thinner fur.
How to Tell If Your Dog Has a Grass Seed
The symptoms depend on where the seed has entered the body. Some dogs show obvious discomfort straight away, while others develop signs gradually as irritation or infection progresses.
1. Limping or licking a paw
A grass seed lodged between the toes or beneath the skin can make walking painful. Your dog may suddenly favour one leg, repeatedly lick a particular paw, chew between its toes or resist having the foot examined. You may notice redness, swelling or a small puncture wound. However, an embedded grass seed is not always visible, particularly in dogs with thick coats.
2. Repeated head shaking or ear scratching
If a grass seed enters the ear canal, your dog may shake its head repeatedly, scratch one ear, hold its head at an unusual angle or become reluctant to have its ears touched. Grass seeds inside the ear can cause significant pain and inflammation. Vigorous head shaking may also lead to an ear haematoma, which is a collection of blood within the ear flap.
3. Redness, swelling or discharge
An embedded seed can cause local inflammation and may introduce bacteria into the affected tissue. You might notice a painful lump, redness, discharge or an area that becomes increasingly swollen.
4. Persistent sneezing or nasal discomfort
A grass seed entering the nose can cause sudden, repeated sneezing, pawing at the muzzle or discharge from one nostril. Some dogs may also develop bleeding from the nose. Avoid trying to flush it out or using tweezers inside the nostril.
5. Eye irritation
Squinting, excessive tearing, redness, pawing at the eye or keeping one eye closed may indicate that a grass seed is trapped around the eye or beneath an eyelid.
What to Do When Your Dog Shows These Symptoms
1. Stop your dog from aggravating the area.
Keep your dog calm and limit walking if it is limping. If your dog is persistently licking or scratching the affected area, an appropriately fitted protective collar may help prevent further irritation while you arrange veterinary advice.
2. Check the coat and paws gently.
If your dog is comfortable, inspect the paws, between the toes, around the ears and through the coat for visible grass seeds. Do not force an examination if your dog is painful or distressed.
3. Avoid digging into the skin.
If a seed is deeply embedded, broken beneath the skin or difficult to grasp, do not probe the wound with tweezers, needles or other tools. You could push the seed deeper or damage surrounding tissue. Never insert cotton buds, tweezers or other objects into the ear canal to remove a suspected grass seed.
4. Contact your veterinarian.
Arrange a veterinary examination if your dog is limping, repeatedly shaking its head, showing swelling or experiencing persistent discomfort. Seek urgent care for eye injuries, significant bleeding, severe pain, loss of balance or other rapidly worsening symptoms.