Several dog food brands and ingredients can be harmful to dogs. Some of the most common include:
- Chocolate: Chocolate contains theobromine, which is toxic to dogs. The darker the chocolate, the more theobromine it contains. Symptoms of chocolate poisoning in dogs can include vomiting, diarrhea, increased thirst, panting, seizures, and even death.
- Grapes and raisins: Grapes and raisins can cause kidney failure in dogs. The exact mechanism of toxicity is unknown, but it is thought to be related to the presence of a compound called tartaric acid. Symptoms of grape and raisin poisoning in dogs can include vomiting, diarrhea, lethargy, and decreased appetite.
- Macadamia nuts: Macadamia nuts can cause a variety of symptoms in dogs, including vomiting, diarrhea, weakness, and tremors. The exact mechanism of toxicity is unknown, but it is thought to be related to the presence of a compound called cyanogenic glycoside.
- Xylitol: Xylitol is a sugar substitute that is often used in chewing gum, candy, and baked goods. It can cause a sudden drop in blood sugar in dogs, which can lead to seizures, liver damage, and even death.
- Dairy products: Some dogs are lactose intolerant, which means they cannot digest the lactose in milk and other dairy products. This can cause vomiting, diarrhea, and gas.
If you think your dog has eaten any of these harmful foods, it is important to contact your veterinarian immediately.