Human foods that could be dangerous, if not deadly, to dogs

1.  Chocolate

According to DogShow.com, the chemical that gives chocolate that yummy taste can be deadly to dogs.  It is actually the most common cause of dog poisoning.  Signs of chocolate poisoning are as small as vomiting and diarrhea to respiratory failure or cardiac arrest.

2. Grapes and raisins

The ASPCA says grape and raisins has been associated with dogs' kidney failure.  Doctors are not sure what exactly causes it, so the safest course of action is to not let your pets have grapes or raisins.

3. Onions and garlic

Onions may make you cry, but the ASPCA says there are compounds in anything in the onion family that can damage your dog's red blood cells.  Garlic is more dangerous than onions.

4. Macadamia nuts

While healthy for humans, Macadamia nuts are dangerous, but usually not deadly for dogs.  They may become weak in the legs and have tremors for up to 48 hours after ingesting the nut, according to DogShow.com.

5. Avocado

Avocado, according to the ASPCA , has the chemical called persin that can be toxic.  But it will usually be a minor upset stomach, but only if they eat a large amount of the flesh or peel of an avocado.

6. Alcohol

Dogs are affected more by alcohol than people according to the ASPCA.  Usually, it will cause vomiting and disorientation.  But dogs, like humans, can have seizures, coma or die from too much alcohol.  If a dog can't stand up, the ASPCA says they should be watched closely by a vet until they fully recover.

7. Bread dough

The yeast that makes the dough rise is dangerous for dogs in any amount.  Yeast will multiply in the stomach, expanding, causing pain or even destroy tissue according to DogShow.com.