Can Dogs Eat Stock Cubes? NZ Safety Answer

Why

Stock cubes (beef, chicken, or vegetable bouillon) are highly concentrated blocks of food additives designed for human cooking. Their primary ingredient is salt, followed by artificial flavor enhancers (like MSG), fats, and dried herbs. Almost all commercial stock cubes contain dehydrated onion and garlic powders to add savory flavor. For dogs, garlic and onions are highly toxic. They contain thiosulfates, which cause oxidative damage to the dog's red blood cells, leading to Heinz body formation and hemolytic anemia (where the body destroys its own red blood cells). The damage is cumulative and can occur from a single concentrated dose or repeated small doses. Additionally, the extreme salt concentration can cause acute sodium poisoning, leading to severe neurological dysfunction.

How much is a problem

A single stock cube can contain between 800 mg and 1,200 mg of sodium, which is a dangerous dose for a medium-to-large dog and potentially lethal for a small dog. Even a small portion of a stock cube or gravy made from it can cause severe salt toxicity and allium poisoning.

If your dog has eaten it

If your dog swallowed a stock cube, it is a serious concern. Monitor them for signs of acute salt toxicity, such as intense thirst, constant drinking, vomiting, diarrhea, weakness, muscle twitching, tremors, or seizures. Also, look out for signs of hemolytic anemia, which may not appear for 2 to 5 days, including pale or yellow gums, rapid breathing, dark orange or red urine, and severe lethargy.

Safer alternatives

If you want to add liquid flavor to your dog's food, purchase a pet-specific bone broth that is certified free of onions, garlic, and added salt.

Related reading

• See the full list: Foods Dogs Can and Can't Eat NZ
• Dog Food Guide NZ
• Pet Emergency Kit NZ Civil Defence Guide
• New Dog Owner: First 30 Days NZ

References

• VCA Animal Hospitals, Onion, Garlic, Chive, and Leek Toxicity in Dogs, checked 2026-07-16: https://vcahospitals.com/know-your-pet/onion-garlic-chive-and-leek-toxicity-in-dogs
• Pet Poison Helpline, Salt, checked 2026-07-16: https://www.petpoisonhelpline.com/poison/salt/

When to see a vet

If your dog has eaten a stock cube, contact your NZ vet or an emergency clinic immediately to discuss inducing vomiting before the sodium and alliums are absorbed.

Important notice

*General food-safety information for NZ pet owners, reviewed against ASPCA/VCA guidance (July 2026). For any suspected ingestion or illness, contact a NZ vet, after-hours emergency clinic, or SPCA for advice.*