Is Bermuda Grass Seed Toxic to Dogs?

By Dr. Zubair Khalid, DVM, MS, PhD ·

Is Bermuda Grass Seed Toxic to Dogs?

Bermuda grass seed is not toxic to dogs. It does not contain a poison that harms your dog's body. The real danger is physical: the sharp, bristly seed heads can lodge in the ears, nose, eyes, mouth, or skin and migrate deep into tissues, where they cause infection and damage [1][2][3][4].

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

  • Bermuda grass seed is not listed as toxic to dogs. The plant family it belongs to (grasses) includes some species that are non-toxic to dogs, such as Sudan grass, which is listed as non-toxic to dogs and cats [5].
  • The main risk is a grass awn foreign body, meaning the seed head gets stuck in or tunnels through tissue.
  • Grass awns have been documented migrating into the brain, prostate, nasal cavity, esophagus, and other sites in dogs [1][2][3][4].
  • Signs depend on where the seed lodges and can include sneezing, head shaking, pawing at the face, discharge from the nose or eye, coughing, pain, fever, or seizures [1][3][4].
  • Call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661 if your dog ate seed heads or has a seed stuck in the nose, ear, eye, or skin. Do not induce vomiting unless a veterinarian tells you to.

Is Bermuda Grass Seed Toxic to Dogs?

No. Bermuda grass seed is not a toxic plant product for dogs. When a plant is toxic, it contains a chemical that poisons the body, such as cyanogenic glycosides or nitrates. Sudan grass, a relative in the same grass family, contains those compounds and is toxic to horses, but it is specifically listed as non-toxic to dogs and cats [5]. Bermuda grass itself is not on toxic plant lists for dogs.

That said, "not toxic" does not mean "safe to eat." The seed heads of grasses like Bermuda are built for a purpose in nature: they attach to passing animals and get carried to new ground. That design makes them excellent at sticking to fur and skin. It also makes them dangerous when they end up in the wrong place on or inside your dog.

If you are sorting out whether a plant your dog chewed is poisonous or simply irritating, our guide to plants poisonous to dogs can help you tell the difference. And if your dog already swallowed something questionable, Dog Ate Toxic Plant walks through the first steps.

Which Parts of the Plant Matter

The seed head, also called the awn or the foxtail-type seed, is the problem part. The leaves and stems of Bermuda grass are not a poisoning concern. The seed head is a small, barbed structure. Once it contacts skin or a body opening, the barbs let it move forward but make it very hard to move back out.

Which Products Matter

Bagged Bermuda grass seed for lawns is the same basic material. If your dog eats a mouthful of loose seed from a bag, the seeds are not poisonous. The concern is the same as with seeds in the yard: they can stick in the mouth, throat, or nose, or be inhaled. Seed that has been treated with fertilizer, pesticide, or a coating is a separate question, and you should call poison control or your veterinarian with the product label in hand.

The Toxic Principle: Why Grass Awns Harm Dogs Without Being Poisonous

There is no toxic principle in Bermuda grass seed. The harm comes from the physical structure of the seed head and from bacteria that travel with it.

A grass awn is a foreign body. Foreign bodies cause harm in three ways. First, they cause direct mechanical injury as they push through tissue. Second, they carry bacteria into deep, normally sterile areas, which leads to abscesses and cellulitis. Third, the body's immune response creates inflammation and swelling around the object.

The veterinary literature on grass awns shows how far these seeds can travel. In one reported case, a 4-month-old puppy developed seizures, vomiting, lethargy, and neck pain, and imaging found a 1.7 cm grass seed inside the brain [1]. In another case, a 13-year-old dog had blood in the urine and fever, and surgery removed a migrating grass awn from inside the prostate gland [2]. A third report described a dog with a grass awn that had penetrated the esophagus and eroded into the carotid artery, causing a large neck mass, fever, and coughing [3]. Grass awns are also a common cause of nasal inflammation in dogs, and CT can help tell a grass awn rhinitis apart from other causes of nasal disease [4].

These are uncommon outcomes, but they show why a seed head is treated as a real problem and not a harmless snack.

Signs Your Dog Has a Grass Seed Problem

Signs depend on where the seed went. Grass awns do not cause one single set of symptoms.

Seeds in the Nose

This is one of the most common presentations. You may see sudden, violent sneezing, pawing at the nose, rubbing the face on the ground, or a bloody or pus-like discharge from one nostril. The signs often start suddenly and do not settle down. Grass awn foreign bodies are a common cause of rhinitis in dogs, and focal bone lysis on CT is more strongly associated with a grass awn than with other causes of nasal disease [4].

Seeds in the Ear

Head shaking, tilting the head to one side, scratching at one ear, whining when the ear is touched, or a bad smell from the ear canal.

Seeds in the Eye

Squinting, tearing, redness, pawing at the eye, or a swollen eyelid. This is an emergency. A seed can scratch the cornea or work its way behind the eye.

Seeds in the Mouth, Throat, or Airway

Drooling, gagging, coughing, difficulty swallowing, or a visible lump under the jaw or in the neck. In the reported esophageal perforation case, the dog had lethargy, fever, intermittent cough, and a large firm mass on the right side of the neck [3].

Seeds in the Skin or Paw

A small swollen spot, a draining tract, or a bump between the toes that does not heal. Dogs often lick at these spots constantly.

Seeds That Were Swallowed

If your dog ate a mouthful of seed, watch for vomiting, gagging, drooling, not eating, belly pain, or lethargy. A seed can irritate the stomach or, in rare cases, work through the wall of the digestive tract.

Signs of a Migrating Seed

When a seed travels deep, the signs become vague and serious. Fever, lethargy, not eating, weight loss, neck or back pain, or seizures can all point to a migrating grass awn [1][2][3]. One reported case in a cat involved a grass awn that was inhaled, then migrated through the diaphragm and caused a liver abscess, with cough, weight loss, and poor appetite [6]. The same kind of migration can happen in dogs.

Typical Timeline

There is no fixed timeline. Some dogs show signs within hours of picking up a seed. Others develop problems over days to weeks as infection builds. In the brain case, the puppy had progressive signs before diagnosis [1]. In the prostate case, the dog had ongoing urinary signs and fever [2]. If you know your dog was running in tall, seeded grass and then starts sneezing or shaking its head, treat it as urgent even if the signs seem mild at first.

What to Do Right Now

  1. Look, but do not dig. If you can see a seed head on the surface of the skin or fur, you can gently remove it with tweezers. Do not push instruments into the nose, ear, or eye, and do not pull hard on anything embedded in tissue.
  2. Call for guidance. Contact your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Poison control lines are staffed for exactly this kind of question, even when the answer is "this is not a poisoning."
  3. Do not induce vomiting unless a veterinarian tells you to. Vomiting a sharp seed head can injure the esophagus on the way back up.
  4. Do not give human medications. Pain relievers like ibuprofen and acetaminophen can harm dogs, and a veterinarian needs to choose any medication and calculate the dose from your dog's weight and health.
  5. Keep your dog calm and go in. If a seed is in the eye, nose, or airway, or your dog is having trouble breathing, go to an emergency clinic now.

Veterinary Treatment for Grass Seed Problems

Treatment depends on where the seed is and how long it has been there.

Your veterinarian will start with a physical exam, including a careful look in the ears, nose, mouth, and eyes. They may use an otoscope or a small camera to search for the seed. Sometimes the seed is visible. Often it is not.

Imaging is common. CT is especially useful for nasal and deep foreign bodies. In one study, grass seeds were seen directly on CT images in only 1 of 22 confirmed nasal grass awn cases, so a normal-looking scan does not rule out a seed [4]. CT can still show patterns, like focal bone lysis, that raise suspicion for a grass awn [4].

Removal may be simple or surgical. A seed in the ear canal might come out with a scope and forceps. A seed in the nose may need anesthesia and a scope. A seed that has migrated into the brain, prostate, or chest requires major surgery. In the brain case, surgeons used intraoperative ultrasound to guide removal of the seed, and the puppy went home two days later with no long-term neurologic problems [1]. In the prostate case, surgery to remove the awn led to full recovery and normal activity four months later [2]. In the esophageal perforation case, imaging and surgery were needed to address the rupture and the artery damage [3]. In the cat with the liver abscess, intraoperative ultrasound allowed removal of the seed without removing part of the liver [6].

Antibiotics are usually part of treatment because these seeds carry bacteria deep into tissue. Your veterinarian will pick the drug and dose based on your pet's weight, the location of the infection, and culture results when available.

Outlook

The outlook is good when the seed is found and removed early. Dogs in the reported cases recovered well after surgery, including the puppy with the brain seed and the dog with the prostate seed [1][2]. The cat with the liver abscess recovered uneventfully with long-term antibiotics [6].

The outlook is more guarded when a seed has been migrating for a long time or has damaged a vital structure. Esophageal perforation and artery erosion are serious injuries that require aggressive care [3]. Delays let infection spread and make surgery harder.

Prevention and Safer Alternatives

Prevention is mostly about managing grass and checking your dog.

  • Mow before seed heads form. Bermuda grass produces seed heads when it is allowed to grow tall. Regular mowing keeps the seed heads from maturing.
  • Avoid tall, dry, seeded grass during walks. This is the highest-risk setting, especially in late summer and fall.
  • Check your dog after every outing. Run your hands over the coat, then look at the paws, between the toes, the armpits, the groin, the ears, the eyes, and the mouth. Remove any seed heads you find on the surface.
  • Brush out the coat. A good brushing removes seeds before they work into the skin.
  • Keep bagged seed secured. Store lawn seed in a closed container your dog cannot reach.
  • Choose lower-risk ground cover if your dog has repeated problems. If your yard is a constant source of seed heads, consider a lawn that does not produce barbed awns, or keep a mowed buffer zone where your dog plays.

If you are also thinking about what is safe to plant around pets, Plants That Aren't Toxic To Cats And Dogs covers pet-safe options, and Common Houseplants Toxic to Cats and Dogs covers indoor plants to avoid.

Limitations and When to Contact a Veterinarian

Grass seed injuries can be hard to diagnose. A seed can be invisible on exam and even on imaging, so a normal workup does not always rule out a foreign body [4]. If signs continue, repeat evaluation is reasonable.

Call your veterinarian the same day if your dog has sudden sneezing, head shaking, pawing at one ear or eye, a draining spot on the skin, or a swollen paw that will not heal.

Go to an emergency clinic now if your dog has trouble breathing, a swollen or bulging eye, a seed visibly stuck in the eye or nose, heavy bleeding, a rapidly growing neck or jaw swelling, severe pain, collapse, or seizures [1][3].

Schedule a routine visit if your dog had a brief episode of sneezing after grass exposure and seems completely normal now, or if you found a seed on the fur and removed it cleanly with no signs of irritation.

Every case is different. Your veterinarian needs to examine your dog to decide what is going on and what treatment is needed.

Frequently Asked Questions

Can my dog get sick from eating Bermuda grass seed?

Eating loose seed is unlikely to poison your dog, but it can cause stomach upset or, rarely, a blockage or internal injury. Watch for vomiting, gagging, drooling, belly pain, or lethargy. Call your veterinarian if any of these appear.

Is Bermuda grass the same as a foxtail?

They are different grasses, but they share the same problem. Both produce barbed seed heads that can stick in tissue and migrate. The risk comes from the shape of the seed head, not from the species name.

Should I make my dog throw up after eating grass seed?

No, not unless a veterinarian tells you to. A sharp seed head can injure the esophagus on the way up. Call poison control or your veterinarian first and follow their instructions.

How do I know if a grass seed is stuck in my dog's nose?

The classic sign is sudden, intense sneezing that does not stop, often with pawing at the face or discharge from one nostril. Some dogs rub their nose on the ground or develop nosebleeds. This needs a veterinary visit, because the seed usually has to be removed with a scope under anesthesia.

Can a grass seed really travel inside my dog's body?

Yes. Documented cases include seeds found in the brain, prostate, nasal cavity, esophagus, and liver of pets [1][2][3][4][6]. Migration is uncommon, but it is the reason a stuck seed head is treated as a serious problem and not a minor annoyance.

Related Articles

References

  1. Successful intraoperative ultrasound-guided retrieval of intracranial grass seed foreign body in a 4-month-old puppy. Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association, 2023.
  2. Prostatic Localization of a Migrating Grass Awn Foreign Body in a Dog. Veterinary sciences, 2020.
  3. Computed Tomography Findings of Migrating Grass Awn Leading to Esophageal Perforation and Carotid Artery Erosion in a Dog. Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association, 2026.
  4. Computed tomography may be helpful in discriminating grass awn foreign body rhinitis from non-foreign body rhinitis in dogs. Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association, 2021.
  5. Toxic and Non-toxic Plants: Sudan Grass. ASPCA Animal Poison Control Center.
  6. Hepatic abscess caused by an inhaled migrating grass awn in a cat: first description and minimally invasive surgical approach. JFMS open reports, 2026.

Further Reading