While some of these on the list can harm dogs directly, others will build up toxins over time. Best bet is to avoid all on this list.

 

1. Alcohol

Causes weakness, vomiting, dangerously low blood pressure, coma and death in pets.

2. Apple, Apricot, Cherry and Plum Seeds/Pits

These pits contain cyanide which can cause vomiting, irregular and fast heartbeat, seizures, coma and death due to the inability of red blood cells to properly carry oxygen to cells.

3. Avocado

Contains persin, a toxic compound that causes vomiting and diarrhea.

4. Broccoli

Contains isothiocyanate which can be harmful to pets in very large doses.

5. Caffeine

Contains methylxanthines which can cause potentially fatal diarrhea, vomiting, seizures and irregular heart beats.

6. Chives

Can cause potentially fatal anemia in dogs (and cats).

7. Chocolate

Contains methylxanthines which can cause potentially fatal diarrhea, vomiting, seizures and irregular heart beats.

8. Garlic

Can cause potentially fatal anemia in dogs (and cats).

9. Grapes and Raisins

Can cause severe and potentially fatal kidney failure.

10. Ham

May cause pancreatitis, a potentially fatal disease, due to high fat content.

11. Macadamia Nuts

Contains an unidentified toxin that can cause vomiting, weakness, joint pain and inflammation.

12. Milk & Dairy Products

May cause diarrhea and gas in adult animals who are lactose intolerant.

13. Mushrooms

Many types contain many different toxins that may cause kidney and liver failure, vomiting, diarrhea, hallucination and damage to red blood cells.

14. Nutmeg

May cause hallucinations and severe vomiting.

15. Onions

Causes potentially fatal oxidation of red blood cells leading to their destruction and causing anemia.

16. Salt

Excessive amounts of salt can cause a change in the fluid balance of cells thus causing tremors, seizures and coma (this includes rock salt and homemade playdough).

17. Spicy Food

Extra heat added to a dish could potentially cause vomiting, stomach ulcers or diarrhea.

18. Sugar-Free Gum & Candy (Xylitol)

Causes a potentially fatal drop in blood glucose (blood sugar) followed by severe liver damage.

19. Tobacco

Nicotine containing products can cause excitement, vomiting and tremors that are usually followed by fatal paralysis.

20. Yeast Dough

Yeast in the raw dough can cause an excess buildup of gas in a pet’s stomach causing severe pain and potential life threatening torsion or rupture of the stomach.

Info from http://www.caninejournal.com