Foods to Avoid

Greyhounds are curious, opportunistic eaters who are often tempted by food they shouldn’t have. Some everyday human foods are toxic to all dogs and greyhounds can face additional risks due to their lean build and unique metabolism. This guide covers the key foods to keep well out of reach.

If you suspect your greyhound has eaten anything on this list, contact your vet immediately, even if they seem fine. Some toxins take hours or even days before symptoms appear.

Grapes and raisins

Grapes and raisins are extremely dangerous to dogs and must never be given to your greyhound. Even small amounts can trigger sudden kidney failure. The toxic substance responsible has not been fully identified, which means there is no safe amount. Raisins are found in many common foods, cakes, biscuits, cereals, and trail mixes so always check ingredient labels before sharing any snack with your dog.

Onions, garlic, and the allium family

The entire allium family of onions, garlic, leeks, chives, and shallots is toxic to dogs and is considered particularly dangerous for greyhounds. These foods damage red blood cells and can cause haemolytic anemia, where the body destroys its own blood cells faster than it can replace them. All forms are dangerous: raw, cooked, dried, and powdered. Symptoms may not appear for several days after ingestion. Be especially careful with soups, stocks, curries, and processed meats that may contain onion or garlic powder.

Chocolate

Chocolate contains a compound called theobromine that dogs cannot metabolise as efficiently as humans. This can cause vomiting, diarrhoea, tremors, an irregular heartbeat, seizures, and in severe cases, death. Dark chocolate and baking chocolate carry the highest concentrations of theobromine, but milk chocolate and white chocolate are also harmful. If your greyhound has a sweet tooth, carob is a safe and dog-friendly alternative.

Cooked bones

While it may seem natural to give a dog a bone, cooked bones are dangerous. The cooking process makes bones brittle, causing them to splinter easily. These splinters can cause internal injuries to the mouth, throat, oesophagus, stomach, and intestines sometimes requiring emergency surgery. If you wish to give your greyhound a bone, opt for large raw bones and always supervise them closely. Never leave a dog alone with any bone.

Raw meat and raw fish

Raw meat and raw fish can harbour dangerous bacteria including Salmonella and E. coli, as well as parasites. Some raw fish  particularly salmon, trout, and sturgeon  can carry a parasite that, if left untreated, can be fatal within a few weeks. Many ex-racing greyhounds were fed raw meat diets during their racing careers, but this is not recommended for pet greyhounds at home without specific veterinary guidance. Always freeze meat before feeding, or cook meat and fish thoroughly before offering any to your greyhound.

Xylitol

Xylitol is an artificial sweetener that is highly toxic to dogs. It is found in a surprising number of everyday products including sugar-free chewing gum, some peanut butters, lollies, cereals, toothpaste, and mouthwash. Even a very small amount can cause a dangerous drop in blood sugar (hypoglycaemia) and lead to liver failure. Always read ingredient labels carefully if a product is labelled ‘sugar-free’, check whether it contains xylitol before allowing your dog anywhere near it.

Human junk food, fatty foods, and sweets

Fatty, salty, and sugary human foods are not suitable for greyhounds. High-fat foods can cause pancreatitis, a painful and potentially life-threatening inflammation of the pancreas. Excess salt can lead to sodium poisoning, causing excessive thirst, vomiting, and in severe cases, seizures. Too much sugar promotes fast weight gain, which is particularly problematic for greyhounds whose lean frames and slender joints are not designed to carry extra weight.

Other foods to be aware of

The following foods also pose risks and should be avoided: macadamia nuts (can cause muscle weakness, tremors, and hyperthermia); avocado (all parts of the plant contain persin, which is toxic to dogs); caffeine in any form including coffee, tea, and energy drinks; alcohol (toxic even in very small amounts); and raw potato (contains solanine, which can cause heart and breathing problems). Fruit seeds and pits such as those from peaches, plums, and apples can also contain cyanide and should never be given to dogs.

A note on greyhound physiology

Greyhounds have very low body fat and a unique liver enzyme profile compared to other dog breeds. This means they can process certain substances differently and may be more sensitive to some toxins and medications. It is always worth informing your vet that you own a greyhound before any procedure or treatment, as this can affect drug choices and dosages.

What to do in an emergency

If you believe your greyhound has consumed something toxic, act immediately, do not wait for symptoms to develop. Contact your vet or the nearest emergency animal hospital straight away. Where possible, make note of what was eaten, how much, and when. Take the packaging with you if you can. Do not attempt to induce vomiting at home unless specifically directed to do so by a veterinarian.