Dangerous Foods That Dogs Should Never Eat: Macadamia Nuts

Dogs should not eat nuts or foods containing nuts because nuts can be fatal. As few as 6 raw or roasted macadamia nuts can make a dog ill. Symptoms of poisoning include muscle tremors, weakness or paralysis of the hindquarters, vomiting, elevated body temperature, and rapid heart rate. Eating chocolate with the nuts will make symptoms worse, leading to possible kidney failure and death.

Web MD

For dogs, milk and other dairy products cause digestion problems.

On a hot day, it may be tempting to share your ice cream cone with your dog. But if your dog could, it would thank you for not doing so. Milk and milk-based products can cause diarrhea and other digestive upset as well as set up food allergies (which often manifest as itchiness).

Dangerous Foods for Dogs: avocado

Who can resist those big brown eyes and cute doggie grin? Can a little reward from the table really hurt your dog? Well, that depends on what it is and what's in it. A chip with guacamole can cause your dog some real problems. In fact, there's a lot of people food your dog should never eat. And, it's not just because of weight. Some foods are downright dangerous for dogs - and some of these common foods may surprise you.

Foods your dog should never eat: Onions

Onion in all forms - powdered, raw, cooked, or dehydrated - can destroy a dog's red blood cells, leading to anemia. That can happen even with the onion powder found in some baby food. An occasional small dose is probably OK. But just eating a large quantity once or eating smaller amounts regularly can cause onion poisoning. Symptoms include vomiting, diarrhea, little interest in food, dullness, and breathlessness.

Web MD