DO NOT give your dog CHOCOLATE,Although many dogs have had eaten it and nothing happen, there are many cases that dogs have died from Chocolate. There however, is an alternative to.... chocolate. It's called, Carob. It comes in the form of powder and chips. Carob is perfectly safe for your furry doggie friend. I use carob all the time in my dog treats.

DO NOT give your dog ONIONS. They are  harmful to dogs...they can cause anemia. Whether raw,cooked, flaked, dehydrate. Onions still have the same toxic effect s the same whether they are raw, cooked or dehydrated.

DO NOT give your dog RAISINS OR GRAPES.
Raisins and grapes can cause vomiting, diarrhea, lethargy and possible kidney failure. For more information, see Raisins and Grapes Can Be Toxic To Dogs.

DO NOT give your dog MACADAMIA NUTS
When ingested, macadamia nuts can cause muscular weakness, depression, vomiting, incoordination, tremors, fever, abdominal pain and muscle stiffness. A dog's front legs are minimally affected but the back legs can become paralyzed.
While affected dogs can be back to normal in 72 hours, some dogs may have been unnecessarily euthanized the problem was misdiagnosed as serious spinal injuries.